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1.
Nephrology Nursing Journal ; 49(4):351-358, 2022.
Article in English | ProQuest Central | ID: covidwho-2026722

ABSTRACT

This project examined the effect of an educational intervention on blood pressure control among minority patients with chronic kidney disease (CKD). Adherence to a lowsodium diet is crucial for blood pressure control. It is also vital to assess food insecurity to improve diet adherence, especially among high-risk underrepresented populations. Participants were recruited from a public hospital renal clinic. Knowledge and food access was assessed using CKD and food insecurity questionnaires. Food frequency and 24-hour 3-day food diaries were completed and analyzed. Eighteen patients were enrolled (Black, nonHispanic = 66.6%, Hispanic = 27.7%, uninsured = 33.3%, and Medicaid recipients = 27.7%). Eighty-nine percent of participants screened positive for food insecurity and received vouchers for healthy food from a food depository. Paired t tests showed statistically significant increase in knowledge (p < 0.00) and self-efficacy, and systolic blood pressure improved post-intervention. This study suggests that Black non-Hispanic and Hispanic patients with CKD have limited access to healthy food and consume higher sodium. Patient education, screening for food insecurity, and access to a food depository enhanced adherence to low sodium diet and improved blood pressure control.

2.
Sustainability ; 14(17):10862, 2022.
Article in English | ProQuest Central | ID: covidwho-2024206

ABSTRACT

The waste generated by small-scale ultra-fresh juice producers, such as bistros and restaurants, has been little studied so far, mainly because it is unevenly distributed and dissipated in the economic ecosystem and would require high costs associated with transportation and subsequent recovery of bio composites. The present article seeks to offer solutions by providing sustainable methods to reduce their waste losses to a minimum and transform them into valuable products, with affordable equipment and techniques. The study focuses on the preliminary phase of quantitative analysis of fruit and vegetable by-products generated on a small scale, the results showing a mean 55% productivity in fresh juices. Due to the high amount of remnant water content in waste, a new process of mechanically pressing the resulting squeezed pulp was introduced, generating an additional yield in juice, ranging from 3.98 to 51.4%. Due to the rising trend in healthier lifestyle, the by-products were frozen or airdried for conservation in each of the processing stages, and the total phenolic compounds and antioxidant activity were analyzed in order to assess the traceability of these bioactive compounds to help maximize their transfer into future final products. The polyphenols transferred into by-products varied between 7 and 23% in pulps and between 6 and 20% in flours. The highest DPPH potential was found in flours, up to three-fold in comparison with the raw material, but the high dry substance content must be accounted for. The results highlight the potential of reusing the processing waste as a reliable source of bioactive compounds.

3.
Agriculture ; 12(8):1221, 2022.
Article in English | ProQuest Central | ID: covidwho-2023053

ABSTRACT

The purpose of this study is to examine and compare different psychological and sociodemographic factors for contracting sweet potato production for farmers with different statuses based upon the theory of planned behavior (TPB). Sustainable production provides contract owners with a sufficient amount of both food crops and a source of bioethanol clean energy. The impact of such factors on potential farmers based on the TPB for a particular contract type is estimated with the data collected in three major sweet potato production cities/counties in Taiwan through the probit model and multinomial logit model. The average size of the surveyed farms is 1.64 ha. The results consistently show that the factors of attitude toward the advantages of contract farming, subjective norms regarding contract farming, perceived contract farming control, and behavior intention have very significant impacts on the selection of contract farming types for professional farmers and brokers. These results indicate that the contract owners will gain the greatest advantage through commanding any factor in TBP for these two groups of farmers, as they have an incentive to manage the sources of sweet potatoes at the best conditions before they have the agreement with the contract owners, either as the supply of bioethanol energy raw materials, supply of food crops, or supply of food processing materials.

4.
Archives of Disease in Childhood ; 107(Suppl 2):A53-A54, 2022.
Article in English | ProQuest Central | ID: covidwho-2019827

ABSTRACT

AimsChildhood eating habits can shape growth and development, influencing both current and future health. Good nutrition supports optimal growth and reduces obesity risk. When COVID-19 was declared a pandemic in March 2020 Northern Ireland (N.I) introduced a legally enforceable ‘lockdown’, bringing about unprecedented change to the daily routine and activities of children and families in N.I. This study aims to examine whether the weight and dietary behaviours of children aged 5-11years in N.I changed during the period March to June 2021 as perceived by their parents.MethodsA 20-question parental survey was created with Yes/No questions, scaled data questions and free text opportunities. 20 schools were selected randomly from N. I’s Education Authority database. Headteachers were contacted and and 2 schools agreed to participate. 480 questionnaires were distributed and returned via schools. Parents could make an informed and voluntary decision to participate, no identifiable information was obtained. Included were questions on changes in weight and dietary behaviours comparing June 2021 with pre pandemic, for children 5-11 years, as perceived by parents.Results220 questionnaires were completed;(median and mean age 8 years. 48% female, 52% male.)Parents were asked if their child’s weight had changed beyond expected with normal growth since the start of the COVID-19 pandemic. 44 (20%) parents felt their child’s weight had increased, 168 (76%) reported no change and 8 (4%) parents perceived their child’s weight had decreased. Of the 44 children with reported weight gain beyond expected 18 (41%) were reported to have a less healthy diet than pre pandemic with 27 (61%) eating more treat food. Of all 220 parents 89 (41%) reported an increase in treat food consumption and 27 (61%) indicated their child was eating less fruit and vegetables. Only 11 (5%) reported an increase in fruit and vegetable consumption and 3 (1%) noted a decrease in treat consumption.Conclusion1 in 5 parents perceived their child’s weight increased beyond that expected during the pandemic. Consumption of treat foods increased for 4 in 10 children. This is worrying as 27% of N.I children aged 2-15 years were already classified as overweight/obese in the Health Survey 2018-2019.1 In addition, treat food consumption was already at alarming levels amongst N.I children with a 2019 study suggesting levels of treat consumption 7 times higher than recommended.2 Public health efforts should be directed towards ensuring these obesogenic health behaviours in childhood do not become ingrained habits in the longer term. Increasing our knowledge of the impact of the COVID-19 pandemic on weight and dietary habits of children in N.I is essential to inform future public health priorities.ReferenceHealth Survey Northern Ireland: First Results 2018/19 [Internet]. Health. 2019 [cited 19 September 2021]. Available from: https://www.health-ni.gov.uk/news/health-survey-northern-ireland-first-results-201819Safefood start campaign. Available from: https://www.safefood.net/news/2019/children-eating-more-treats

5.
IISE Annual Conference and Expo 2022 ; 2022.
Article in English | Scopus | ID: covidwho-2011555

ABSTRACT

Recent events such as natural hazards, diet trends, and the COVID-19 pandemic have shed light on several inefficiencies of the traditional fresh fruit and vegetable (FFV) supply chain (SC). Factors that contribute to this problem are the lack of coordination of the SC participants, the inaccessibility of planning tools for agricultural production, and the absence of market information to determine if a product will have a demand. Intelligent SCs are emerging to address some of these issues by using data-driven tools to aid in decision-making. Nonetheless, there has been little work to incorporate market intelligence in the new SC model to solve the lack of market information in the traditional model. It is essential to include market intelligence in the new SC model to decrease food waste, reduce losses related to low market prices and demands, and avoid scarcity events in which food availability and affordability decrease, while aiding small growers by alerting them of potential market opportunities. This work aims to develop a market intelligence framework for the FFV SC and incorporate it into the intelligent SC. A layered system approach is used with the goal of collecting relevant data to monitor and diagnose the market's state and provide recommendations to the SC participants. The layered system framework aims to decompose the overall problem into several layers with distinct goals such as data collection, processing, monitoring, diagnostics, among others. This work will focus on the monitoring aspect of the system. © 2022 IISE Annual Conference and Expo 2022. All rights reserved.

6.
Annals of Nutrition & Metabolism ; 78:28, 2022.
Article in English | ProQuest Central | ID: covidwho-2011432

ABSTRACT

Introduction: State of alarm was declared in Spain from March 14th to June 21st, 2020 due to COVID-19 pandemic, forcing population to home confinement. "Corona Cooking Survey" (CCS) is an international project led by the University of Antwerp involving 38 countries worldwide. Objectives: To know the variations in the frequency of consumption of some foods in Spanish adult population during the COVID-19 lockdown according to their family composition. Methods: A Cross-sectional study of 679 Spanish adults aged 18-83 years (75.9% women) completed the CCS from April 20th to June 16th, 2020. A survey designed by FOOMS research group of the University of Antwerp, Gent University and KU Leuven, was translated into Spanish and distributed electronically to a convenience sample. Only questions about food frequency consumption were considered for analysis. Data were adjusted by family composition, according to the presence (CH: n=259, 38.1%) or absence (NCH: n=420, 61.9%) of children at home. Statistical analysis was performed with SPSS Statistics software v. 25 (IBM Corp., Armonk, NY, USA). Results: Fruits, vegetables, dairy, and non-sugared beverages, were the most frequently consumed (≥ 5-6 times/week), followed by white bread, pasta and grains (≥ 2-4 times/week). Both groups increased legumes/pulses, sweet snacks (both p <0.001), and salty snacks (NCH p <0.05;CH p <0.01) intake, while consumption of processed foods (p <0.001) decreased during the lockdown. Consumption of vegetables and unprocessed vegetarian alternatives decreased in NCH (both p <0.05), while CH increased plantbased drinks (p <0.01), dairy products and alcoholic beverages (both p <0.05). Conclusion: During the COVID-19 lockdown, presence of children at home influenced the frequency of vegetables, dairy, vegetarian alternatives, plant-based and alcoholic drinks consumption, but not the general trend of increasing legumes and decreasing processed foods intake.

7.
African Journal of Inter/Multidisciplinary Studies ; 3(1):131-143, 2021.
Article in English | ProQuest Central | ID: covidwho-2002899

ABSTRACT

This study assesses the impact of the COVID-19 pandemic on food consumption habits, food purchasing behaviours, and food security status among South African adults. The researchers conducted an online consumer survey for the month of October 2020. Approximately two-thirds of participants were youth and women, predominantly from KwaZulu-Natal. A significant number of participants reported to either having remained the same weight or gained weight. Changes in food consumption habits included a significant increase in snack consumption, increased water consumption, and improved food skills. Notably, no food was eaten significantly more than before COVID-19 and no food was eaten significantly less than before COVID-19. Regarding food purchasing behaviours, a significantly high number of participants indicated that food prices increased during the lockdown. Whilst a significant number of participants indicated that they had no difficulties eating enough food, a significant number of participants reported that they could not afford to buy more food and as a coping strategy resorted to planting vegetables. The findings of this survey provide an advancement of knowledge on food consumption, food purchasing behaviours, and food security status during emergency situations as well as long-term food-related strategies.

8.
SciDev.net ; 2020.
Article in English | ProQuest Central | ID: covidwho-1998229

ABSTRACT

The spread of COVID-19 across the globe has led to never-before-experienced lockdown situations – which in turn are having a significant impact across agricultural systems – threatening food security for increasing numbers of people around the world. [...]the stark reality is that around half a billion smallholder farmers, who help produce almost 80 per cent of the food consumed in Asia and Sub-Saharan Africa are not immune to the impacts of this crisis. Local, national and global food supply chains will falter if farmers cannot access inputs or supplies necessary for efficient production, get into their fields to sow their crops, fertilize appropriately, manage pest and weed problems, harvest perishable products such as fruits and vegetables, or participate in markets because of lockdowns.

9.
Colloids and Surfaces A: Physicochemical and Engineering Aspects ; : 129947, 2022.
Article in English | ScienceDirect | ID: covidwho-1996097

ABSTRACT

We report a novel UV-Vis spectrophotometry combined with micro Soxhlet extraction method for the detection of CPS pesticide in fruits and vegetables based on alpha-cyclodextrin capped silver nanoparticles (AgNPs/α-CD). Recently, CPS pesticide has been used as a disinfectant in post-harvesting agriculture to prevent or inhibition of recent outbreaks (COVID-19) with pathogens contamination resulting in an increased concentration of pesticides in the environment. Therefore, we developed an AgNPs/α-CD as a chemical sensor for the detection of CPS loaded on agricultural products. The sensing mechanism for the detection of CPS pesticide is based on the change in color of the AgNPs/α-CD from yellow to red followed by the redshift of the LSPR absorption band (410/570nm) in the UV-Vis region after the addition of the analyte into the NPs solution. The changes of color and LSPR band shifting of AgNPs are observed only in CPS pesticides due to the H-bonding and non-covalent interactions of oxygen moieties with AgNPs/α-CD. Limit of detection (LOD) and limit of quantification (LOQ) in the region of 4.0 and 13.0 ngmL-1 have been achieved for CPS pesticide using AgNPs/α-CD, respectively. These data establish the potential for this sensor for the use CPS pesticide analysis at trace levels.

10.
CC&T, Cadernos de Ciencia & Tecnologia ; 39(1), 2022.
Article in Portuguese | CAB Abstracts | ID: covidwho-1994962

ABSTRACT

The consumption of vegetables is essential for the population's quality of life, especially in a period of sanitary crisis caused by the new coronavirus. Thus, this study aimed to analyze the initial impact of the pandemic on vegetable consumption habits in Brazil, evaluating the relationship between monthly income and the main factors that guided consumers when purchasing vegetables in Brazil. With this purpose, at the beginning of the pandemic, a questionnaire was applied through GoogleR Forms, which was disseminated online through applications and social networks in the form of an opinion poll. Statistical analysis was performed using the chi-square test in order to verify the association of income with decision-making factors in the consumption of vegetables in Brazil. The results indicated that income shapes consumer behavior and exerts different impacts for certain vegetable crops. In addition, quality stood out as a more important factor than nutritional benefits when consumers were purchasing vegetables, even during the Covid-19 pandemic in Brazil.

11.
Sustainability ; 14(15):9715, 2022.
Article in English | ProQuest Central | ID: covidwho-1994199

ABSTRACT

Land-use transition is one of the most profound human-induced alterations of the Earth’s system. It can support better land management and decision-making for increasing the yield of food production to fulfill the food needs in a specific area. However, modeling land-use change involves the complexity of human drivers and natural or environmental constraints. This study develops an agent-based model (ABM) for land use transitions using critical indicators that contribute to food deserts. The model’s performance was evaluated using Guilford County, North Carolina, as a case study. The modeling inputs include land covers, climate variability (rainfall and temperature), soil quality, land-use-related policies, and population growth. Studying the interrelationships between these factors can improve the development of effective land-use policies and help responsible agencies and policymakers plan accordingly to improve food security. The agent-based model illustrates how and when individuals or communities could make specific land-cover transitions to fulfill the community’s food needs. The results indicate that the agent-based model could effectively monitor land use and environmental changes to visualize potential risks over time and help the affected communities plan accordingly.

12.
Applied Sciences ; 12(15):7652, 2022.
Article in English | ProQuest Central | ID: covidwho-1993927

ABSTRACT

A total of fourteen papers (ten research papers and four review papers) in various fields of horticulture are presented in this Special Issue, including such topics as the identification and accumulation of the bioactive compounds in various plant species;the effects of abiotic stresses on bioactive compound composition and content;and exploration of the best methods for bioactive compound extraction. [1], the authors investigated the nutritional profile and the antioxidant, antiproliferative, and antibacterial activities of five species of Brassica (cauliflower, broccoli, red cabbage, white cabbage, and Chinese cabbage);they found that these Brassica vegetables are excellent sources of polyphenols that showed moderate antiproliferative and antibacterial potential. [2], the effect of the bulk density and water-holding capacity of lignite substrate in comparison to mineral wool and the EC of nutrient solution on the plant morphological parameters, yield, and fruit quality of greenhouse cucumber were investigated, and the results suggest that both the substrate density and water-holding capacity positively affected the morphological features of the plants. In the fourth paper, reported by Karim and Yusof [4], it was found that the impregnation of spinach leaves with salicylic acid, γ-aminobutyric acid, and sucrose effectively improved the quality and storage ability by reducing chilling injury through improvement of the proline content.

13.
International Journal of Agronomy ; 2022, 2022.
Article in English | ProQuest Central | ID: covidwho-1993144

ABSTRACT

Potato (Solanum tuberosum L.) is an important tuber crop that is highly affected by poor soil fertility and nutrient disparities. Nutrient depletion due to intensive monocropping and poor soil management practices is a serious problem in Ethiopia, including in northwestern areas. Therefore, an experiment was conducted in the East Gojjam zone of northwestern Ethiopia to evaluate the influence of phosphorus and potassium fertilizer rates on potato tuber production. Three phosphorus levels (0, 34.5, and 69 kg/ha−1) and four potassium levels (0, 100, 200, and 300 kg/ha−1) were set out in a factorial arrangement and replicated three times using a randomized complete block design. Data on growth and quality parameters, as well as plant tissue analysis results, were collected. According to the results, the main effects of phosphorus and potassium fertilizer rates statistically affected growth components. The combined effects of phosphorus and potassium fertilizers had a significant influence on quality components (tuber size distribution). Similarly, the interaction effects of phosphorus and potassium fertilizer rates gave the highest response in all nutrient use efficiency parameters. The combined application of 34.5 kg P2O5 and 200 kg K2O fertilizers resulted in the highest medium (28.32 ton/ha−1) and large-sized (20.0 ton/ha−1) tuber yields. The interaction effect of 34.5 kg P2O5 with 100 kg K2O ha−1 yielded the highest agronomic and recovery efficiency values. Hence, a combination of 34.5 kg P2O5 ha−1 and 200 kg K2O ha−1 fertilizer rates can be recommended for the optimal production of potato in the northwestern area.

14.
Journal of Agribusiness in Developing and Emerging Economies ; 12(3):463-476, 2022.
Article in English | ProQuest Central | ID: covidwho-1985359

ABSTRACT

Purpose>This paper aims to investigate how differently the COVID-19 blockade regulations influence the prices of perishable and storable foods. The authors focus on the cases of the 2020 blockade at Hubei province and the 2021 blockade at Shijiazhuang city in China, and the authors examine how the blockade influenced the prices of Chinese cabbages (perishable) and potatoes (storable) within and around the blockade area.Design/methodology/approach>The paper employs the fixed effects model, the panel VAR (PVAR) model, and the spatial dynamic panel (SPD) model to estimate the impacts of the blockade on the food prices. It constructs the unique data set of 3-day average prices of Chinese cabbages and potatoes at main wholesale markets in China during the two urban blockade periods from January 1 to April 8 in 2020 and from January 1 to March 1 in 2021.Findings>The results from the SPD models indicate that the price of Chinese cabbages was more vulnerable and increased by 7.1–9.8% due to the two blockades while the price of potatoes increased by 1.2–6.1%. The blockades also significantly influenced the prices in the areas adjacent to the blockade area. The SPD results demonstrate that the impacts of the blockades would be overestimated if the spatial dependence is not controlled for in the fixed effects model and the PVAR model.Research limitations/implications>Because the research focuses on the cases in China, the results may lack generalizability. Further research for other countries is encouraged.Originality/value>This paper demonstrates the importance of considering food types and spatial dependence in examining the impact of the COVID-19 blockades on food prices.

15.
Journal of Nutritional Science ; 11, 2022.
Article in English | ProQuest Central | ID: covidwho-1972473

ABSTRACT

Marketing influences consumers’ dietary purchases. However, little is known about marketing environments in Supplemental Nutrition Assistance Program (SNAP)-authorised stores. The present study explored SNAP-authorised store marketing environments in Louisiana by rurality, store ownership and store type (n 42). Sampling methods were designed to include randomly selected stores in each geographic area of the state. The GroPromo was used to measure placement, promotion, and child-focused aspects of marketing strategies used for healthier (fruits and vegetables) and less healthy products (chips, candy, sugar-sweetened beverages, child-focused cereal) in medium- and high-prominence marketing areas. In using multivariate analysis of variance (MANOVA) (P < 0⋅05) for data analysis, variations in GroPromo scores were found among SNAP-authorised stores by rurality (P < 0⋅05) and store ownership (P < 0⋅001);no differences were found by store type (P > 0⋅05). Future research, practice and policy strategies are required to understand the influence of marketing environments on SNAP participants’ dietary quality and to design responsive public health interventions.

16.
International Journal of Agricultural Technology ; 18(3):1221-1232, 2022.
Article in English | CAB Abstracts | ID: covidwho-1970848

ABSTRACT

Result found that most of the guardians (95%) of the students grew more than 5 kinds of vegetables. All of the guardians (100%) were chosen to grow organic vegetables and they could perform well in terms of vegetable growing methods and caretaking with their children. These vegetables were used for household consumption and it helped to reduce food expenses by 30%. The promotion of vegetable gardening was truly reduced household expenses with a statistical significance level of 0.05. Findings was showed a statistically significant difference level at 0.01 by student learning achievement before and after the promotion. The farmers were satisfied with the online suggestions of the teachers at the highest level (x =4.65). Learning together and attitude inspiration were also found at the highest level (x = 4.38 and 4.25, respectively). Besides, the promotion process using online media technology stimulated actual practice and created skills in the management of vegetable gardening. The promotion of vegetable gardening also created the pride of local value, participatory learning, learning society (online social media), value-added of yields, and food security of farmer households.

17.
Agenda ; : 1-15, 2022.
Article in English | Web of Science | ID: covidwho-1967758

ABSTRACT

Existing literature suggests that increased consumption of fruit and vegetables is not only important for general health but is also critical for the prevention and control of non-communicable diseases. However, consumption of fruit and vegetables in South Africa remains low and gendered, with women consuming more vegetables because of social and cultural reasons. Using the gender and development approach as a theoretical lens, this paper explores the consumption of fruit and vegetables during the COVID-19 epidemic, drawing on qualitative research (focus groups and key informant interviews) conducted among communities and stakeholders in Gauteng, KwaZulu-Natal, and Mpumalanga. The paper draws out key themes emerging from the discussions on consumption of fruit and vegetables in the selected communities through content analysis. Consistent with the literature, the study findings suggest that fruit and vegetable consumption is low and that gender and cultural beliefs affect consumption. Although communities know about and consume indigenous vegetables, perceptions of these as foods of the poor and their unavailability in major retail stores limit their consumption. Retailers as dominant players in the food system dictate the fruits and vegetables that are sold and consumed, and rather than reflecting the diversity of the population, these tend to reflect the interests and tastes of the owners of the means of production. Social media obfuscated the gender differences in the consumption of specific vegetables and fruits. This paper underscores the gendered attitudes, while unravelling the embeddedness of cultural mores, values, and taboos on the consumption of fruit and vegetables in a time of COVID-19. Policies and programmes for improving consumption of fruit and vegetables need to be culturally appropriate and need to decolonise the food system, to improve access to and consumption of indigenous varieties.

18.
Táplálkozásmarketing ; 9(1):39-53, 2022.
Article in Hungarian | ProQuest Central | ID: covidwho-1964901

ABSTRACT

The COVID-19 pandemic has had a significant impact on the daily lives of the population, primarily due to the disease control measures. The focus has shifted to health protective factors, with a healthy diet playing a key role in increasing the human body's resistance to pathogens. In addition, being overweight has a negative impact on the course of the disease, making the virus an even greater threat to our society. Our aim was to examine how the pandemic has changed our daily diet, with a particular focus on fruit and vegetable consumption. Data collection included both secondary and primary research. With 242 responses, our primary analysis was conducted using an online questionnaire. The results showed, that half of the respondents had changed their eating habits and one third had gained extra weight during the pandemic. A higher percentage regard their fruit and vegetable consumption as sufficient enough, while only 29.6% think they are eating the daily recommended amount. The results showed that there is a lack of awareness among respondents of the recommended daily intake of fruit and vegetables, which is a fundamental problem in terms of dietary health. JEL Code: I12Alternate : A COVID-19 fertőzés jelentős mértékben hatott a lakosság mindennapi életvitelére, melynek oka elsődlegesen a járványellenes megszorító intézkedések voltak. Előtérbe kerültek az egészséget védő tényezők, melyek közül az egészséges táplálkozásnak kiemelt szerepe van az emberi szervezet kórokozókkal szembeni ellenállás fokozásában. Ezen kívül a túlsúly kedvezőtlenül befolyásolja a betegség lefolyását, így társadalmunkra még nagyobb veszélyt jelent a vírus. Célunk volt vizsgálni, hogy milyen változásokat hozott a pandémia a mindennapi étkezésünkben, kiemelten a zöldség és gyümölcs fogyasztást. Az adatgyűjtés során szekunder és primer kutatást is végeztünk. Primer vizsgálatunkat online kérdőív segítségével végeztük, melyre 242 válasz érkezett. Megállapítottuk, hogy a megkérdezettek felénél változtak a táplálkozási szokások és egy harmada plusz kilókkal küzd a pandémia alatt. Nagyobb százalékban gondolják azt, hogy elegendő zöldség/gyümölcs fogyasztásuk, míg a napi ajánlott mennyiség bevitele már csak 29,6%-ra jellemző. Az eredmények rámutatnak arra, hogy a napi ajánlott zöldség/gyümölcs mennyiségével nincsenek tisztába a megkérdezettek, amely az egészséges táplálkozás szempontjából is alapvető problémaként tekinthető. JEL kód: I12

19.
IOP Conference Series. Earth and Environmental Science ; 1064(1):012001, 2022.
Article in English | ProQuest Central | ID: covidwho-1960954

ABSTRACT

Implementation of remote sensing in agriculture helps to enhance crop growth monitoring especially during the Covid-19 pandemic. To enhance black pepper growth condition, a study was conducted at two study sites in Bintulu, Sarawak. Hence, this study aims (i) to construct a black pepper growth monitoring at different levels of elevation in Suka Farm (SF) and Taime Farm (TF);and (ii) to integrate limited ground data and NDVI time series from Landsat 8OLI for black pepper growth monitoring. Elevation maps were generated using Natural Neighbor (NN) based on the ground data analysed using ArcGIS 10.4 Software. Three elevation levels were classified into the lower, middle, and upper levels. Observational ground data and NDVI time series of Landsat 8 OLI were calculated using SAS 9.4 software. All parameters then correlating with the elevation levels using Pearson Correlation Coefficient. Optimum growth of black pepper growth in SF and TF was identified at an elevation range between 39m–50m. The NDVI time series also indicated equivalent results as the ground data. This study proposed that the elevation of an area gives a significant impact on black pepper growth. Besides, the NDVI time series of Landsat 8 OLI was feasible for monitoring black pepper growth.

20.
International Journal of Agricultural and Biological Engineering ; 15(3):55-61, 2022.
Article in English | ProQuest Central | ID: covidwho-1934919

ABSTRACT

Food security is one of the key global challenges in this century. In Singapore, our research team has been using novel aeroponic technology to produce fresh vegetables since 1997. Aeroponic systems allow for year-round production of not only tropical, but also sub-tropical and temperate fresh vegetables, by simply cooling the roots suspended in aeroponic systems while the aerial parts grow under tropical ambient environments. It has also been used to investigate the impacts of root-zone CO2 on vegetables by enriching root-zone CO2 while their aerial portions were subjected to constant atmospheric CO2. To compensate for the lack of available land, Singapore also needs to develop a farming system that can increase productivity per unit land area by many-fold. Over the past 10 years, my research team has established a commercially viable LED integrated vertical aeroponic farming system to grow different leafy vegetables under different LED spectra, intensities, and durations in the tropical greenhouse. The results demonstrate that it is possible to increase shoot production and rate of shoot production of leafy vegetables by increasing light intensity and extending the photoperiod under effective LED lighting. Furthermore, temperate vegetable crops such as lettuce were able to acclimate to high light intensity under supplementary LED lights to natural sunlight in the greenhouse. Supplementary LED lightings promote both leaf initiation and expansion with increased photo synthetic pigments, higher Cyt b6f and Rubisco protein contents on a per area basis and thus improve photosynthetic capacity and enhance productivity. Plants sense and respond to changes in their immediate environments (microclimate), manipulating the root zone temperature (RZT) and water supply will impact not only their growth and development but also their nutritional quality. Our on-going research aims to investigate if the nutritional quality of leafy vegetables could be improved under suboptimal RZT and mild water deficit through deficit irrigation. If substantial energy and water savings in urban farming can be achieved without substantial yield penalty but with higher nutritional quality, the amount of water and energy saved can bring substantial benefits to society.

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