Aflatoxins and fungal community distribution during harvesting and processing of Platycladi Semen / 中国中药杂志

This study aimed to analyze aflatoxins content and fungal community distribution in the harvesting and processing of Platycladi Semen, and explore the key link that affects aflatoxins contamination. The related Platycladi Semen samples of different maturity periods(cone non-rupture period, early rupture, and complete rupture period) and different processing periods(before drying, during 2-d drying, during 7-d drying, before and after seed scale removal, before and after peeling, 1 d after color sorting, and 7 d after color sorting) were collected for identifying the fungal community composition on sample surface by ITS amplicon sequencing. Then the content of aflatoxins B_1, B_2, G_1 and G_2 was determined by HPLC-MS/MS. The results showed that during the harvesting of Platycladi Semen from cone non-rupture to complete rupture, aflatoxins were only detected in the seed scale and seed coat, with aflatoxin G_2 in the seed scale and aflatoxin B_1 in the seed coat. During the drying, with the prolongation of drying time, aflatoxins B_1 and G_2 were detected simultaneously in the seed scale, aflatoxin B_1 in the seed coat, and low-content aflatoxin B_1 in the seed kernel. During subsequent processing, the aflatoxin content in seed kernel during subsequent processing was slighted increased. As demonstrated by fungal detection, Aspergillus flavus was not present during the harvesting of Platycladi Semen, but present during the drying and processing. Its content in the seed coat during the drying process was relatively higher. In short, Platycladi Semen should be harvested as soon as possible after it becomes fully mature. Drying process is the key link of preventing aflatoxin contamination. It is advised to build a sunlight room or adopt similar settings, standardize the operations in other processes, and keep the surrounding environment clean to minimize aflatoxin contamination.

[Investigation on the Influencing Factors of Adult Dyslipidemia in Shunqing District of Nanchong City].

OBJECTIVE: To analyze the risk factors of dyslipidemia of adult residents in Shunqing District of Nanchong City. METHODS: A five-stage stratified cluster sampling method was used to select adult residents from 9 communities in the urban area of Shunqing District of Nanchong City from January 2013 to April 2018 for questionnaires survey,physical measurement and laboratory test. Univariate analysis and multivariate logistic regression analysis were used to study the influencing factors of dyslipidemia. RESULTS: A total of 105 956 people was investigated,and the prevalence rate of dyslipidemia was 34.2% (36 272 cases). Among them, the prevalence rate of male was 38.11%, and 31.91% for female ( P<0.01). The proportion of dyslipidemia with hypertension, diabetes, and coronary heart disease was 13.46%, 5.74%, and 0.39%, respectively. The proportion of hypertension with diabetes was 2.79%. Multivariate logistic regression analysis showed that gender (odds ratio ( OR)=1.276, P<0.001), body mass index ( OR=1.052, P<0.001), education level (set ≤elementary school as reference, high school OR=1.094, P<0.001, ≥graduated OR=1.185, P<0.001), smoking history ( OR=1.124, P<0.001), coronary heart disease ( OR=1.189, P<0.001), hypertension ( OR=1.148, P<0.001),sdiabetes ( OR=1.967, P<0.001), and family history of dyslipidemia ( OR=1.760, P<0.001) were the influencing factors of dyslipidemia in residents of this region. Conclusions The dyslipidemia of urban residents in Nanchong area is highly concerned with hypertension, diabetes, and coronary heart disease. Male, obesity, high education level, smoking, coronary heart disease, hypertension, diabetes, and family history of dyslipidemia are risk factors for dyslipidemia in urban residents of Nanchong area. It is necessary to actively target the above risk factors and high-risk groups.