Effect of processing on toxic components lectin from four kinds of Araceae toxic medicines / 中国中药杂志

The study aimed to investigate the effect of processing on lectin protein in four toxic Chinese medicines tubers of Pinellia ternata,P. pedatisecta,Arisema heterophyllum and Typhonium giganteum. Western blot was used to semi-quantitatively analyze the content of lectin in the four kinds of toxic Chinese medicines and their different processed products. Raw products and lectin were treated by heating or soaking in ginger juice or alum solution. The effects of different excipients and the heating methods on lectin proteins were investigated. The results showed that the content of lectin in raw products of P. pedatisecta,P. ternata,A. heterophyllum,and T. giganteum were 7. 3%,4. 9%,2. 7%,2. 3%,respectively. And the content of lectin in Pinelliae Rhizoma praeparatum cum alumine was 0. 027%. Lectin was not detected in the Pinelliae Rhizoma Praeparatum cum Zingibere et Alumine,Arisaematis Rhizma Praeparatum and Typhonii Rhizoma Praeparatum,which indicated that processing could significantly reduce the content of active lectin in raw products. The results also showed that with the prolongation of soaking and heating time,the content of lectin in raw products decreased gradually,while the content was almost unchanged when soaked in ginger juice alone. The effects of different excipients and heating on lectin were the same as those on raw products. Therefore,the method with alum soaking and heating can reduce the content of active lectin,which is the key to reduce the toxicity of toxic Chinese medicines. In this paper,Western blot was used to study the content of toxic protein in Araceae toxic Chinese medicines as an evaluation method of the processing degree.

Identification of four Armillaria strains and their effects on quality and yield of Gastrodia elata f. glauca / 中国中药杂志

In order to improve the quality and yield of Gastrodia elata f. glauca,determine the suitable Armillaria strains for the accompanying experiment in Xiaocaoba,Yiliang,four Armillaria strains were selected. They were used for G. elata cultivation,and the gene sequence,r DNA-ITS,β-tubulin and EF1-α of four Armillaria strains,were compared and analyzed. The yield was mesured in November which was based on previous laboratory research. The tubers were washed and steamed,then dried and powdered. The content of gastrodin and p-hydroxybenzyl alcohol was determined by UPLC,the polysaccharide was determined by phenol-concentrated sulfuric acid method. The results showed that the strains M1,M2,M3 and M4 were Armillaria gallica group but there were differences in the yield and active ingredient content when they were cultivated with the same G. elata. The yield of G. elata( Jian Ma) was the lowest when cultivated with Armillaria strain M3,but it was not the same when used M1,0. 981 kg·m-2,the highest yield in the four stains.The content of gastrodin was 0. 581%,the total content of gastrodin and p-hydroxybenzyl alcohol was 0. 595%,when accompanied with M1 strains. It was higher than other strains. The content of G. elata polysaccharide was 2. 132%,which was similar to the content of M3 strain,higher than that of M2 and M4 strain. Selecting phylogenesis of Armillaria strians,the content of active ingredient,and the yield as indicators,it was concluded concerned that the M1 strain was the best of four strains. The results will provide a theoretical basis and guidance for higher yield and quality in cultivation of G. elata in Yiliang.

Production of 4-Ipomeanol, an anticancer agent from the root tubers and rhizogenic callus of Ipomoea batatas Lam.: A Comparative study.

A comparative study was done on the production of 4-ipomeanol from root tubers of Ipomoea batatas and its rhizogenic callus. Best callusing response was obtained on MS medium supplemented with 11 µM NAA (α-Naphthaleneacetic acid) and 1 µM KIN (Kinetin). Effect of various elicitors (Fusarium solani, chitin and chitosan) on the production of 4-ipomeanol was studied. Methanol extract of the samples were purified by column chromatography and detected using TLC. Identification of 4-ipomeanol was confirmed using HPLC and quantified spectrophotometrically. A mass spectrum was recorded to confirm the presence of 4-ipomeanol. The calli grown under chitin produced highest (6.61mg g-1) amount of 4-ipomeanol. This is the first report on in vitro production of 4-ipomeanol from I. batatas. Since 4-ipomeanol is reported to be present only in I. batatas, this study would help in standardizing protocols for large scale production without affecting its natural flora.

Trichuris trichiura in a post-Colonial Brazilian mummy

Trichuris trichiura is a soil-transmitted helminth which is prevalent in warm, moist, tropical and subtropical regions of the world with poor sanitation. Heavy whipworm can result either in Trichuris dysenteric syndrome - especially in children - or in a chronic colitis. In heavy infections, worms can spread proximally and may cause ileitis. Here we provide first microscopic evidence for a T. trichiura adult worm embedded in the rectum of a post-Colonial Brazilian adult mummy. During Colonial and post-Colonial times, many European chroniclers described a parasitic disease named Maculo whose symptomatology coincides with heavy helminthiasis. Based on our findings and on comparison of ancient textual evidence with modern description of heavy whipworm, we feel confident in considering that the two syndromes are expressions of the same pathological condition.

Caracterización química y cuantificación de fructooligosacáridos, compuestos fenólicos y actividad antirradical de tubérculos y raíces andinos cultivados en el noroeste de Argentina / Chemical characterization and quantification of fructooligosaccharides, phenolic compounds and antiradical activity of Andean roots and tubers grown in Northwest of Argentina

Existe un creciente interés por consumir alimentos que además de aportar los componentes básicos para una buena nutrición provean otros compuestos benéficos para la salud. El objetivo del trabajo fue determinar la composición química de alimentos autóctonos de la región andina y cuantificar algunos componentes funcionales. Se determinó composición centesimal, contenido de vitamina C y compuestos fenólicos totales, actividad antirradical (DPPH) en cáscara y pulpa, fibra dietaria soluble e insoluble, fructooligosacáridos (FOS), almidón total y resistente (en tubérculos y raíces crudos, hervidos y hervidos y almacenados) de 6 variedades de Ocas (Oxalis tuberosa), 4 clones de Mandiocas (Manihot esculenta Crantz) y Yacón (Smallanthus sonchifolius). Los resultados mostraron mayor cantidad de compuestos bioactivos y actividad antirradical en la cáscara de ocas. En todos los casos el contenido de fibra insoluble fue mayor que la soluble. Las mandiocas tuvieron mayor contenido de almidón total que las raíces y tubérculos andinos. El proceso de ebullición disminuyó el contenido de almidón resistente en ocas y mandiocas pero cuando éstas se almacenaron por 48h a 5°C, el contenido de almidón resistente aumentó nuevamente. El contenido de FOS en ocas fue similar para todas las variedades (Aproximadamente 7%). El principal componente de los carbohidratos del yacón fueron los FOS (8,89%). Se puede concluir que las raíces y tubérculos estudiados, además de aportar nutrientes, contienen compuestos funcionales que les confieren un valor adicional como alimentos útiles para la prevención de algunas enfermedades no trasmisibles.

There is great interest in consuming foods that can provide the nutrients for a good nutrition and other health beneficial compounds. The aim of this work was to determine the chemical composition of native foods of the Andean region and to quantify some functional components. Proximal composition, vitamin C, total phenolic compounds, antiradical activity (DPPH) in peel and pulp, dietary fiber soluble and insoluble, fructooligosaccharides (FOS), total and resistant starch (in tubers and raw roots, boiled and boiled and stored) of 6 varieties of Oca (Oxalis tuberosa), 4 clones of manioc (Manihot esculenta Crantz) and yacon (Smallanthus sonchifolius were determined. The results showed greater amount of bioactive compounds and antiradical activity in the skin of these products. The highest content was found in the oca peel. In all cases, the content of insoluble fiber was greater than the soluble. The manioc had higher total starch than Andean roots and tubers. The boiling process decreased the resistant starch content of ocas and maniocs, but when these are stored for 48 h at 5 ° C, the resistant starch content increased. The FOS content of the ocas was similar for all varieties (7%). The main component of yacon carbohydrates were FOS (8,89%). The maniocs did not contain FOS. It can be concluded that the roots and tubers studied, in addition to provide nutrients, contain functional compounds that confer additional helpful value for preventing no communicable diseases.

Evaluación en campo de plantas de ñame (Dioscorea alata L) obtenidas de los microtubérculos formados en sistema de inmersión temporal / Field evaluation of yam plants (Dioscorea alata L) obtained from microtubers produced in a temporary immersion system

Los microtubérculos en algunas especies de plantas constituyen una importante alternativa como material vegetal de plantación. Se definió como objetivo de trabajo evaluar en campo la respuesta morfoagronómica de las plantas obtenidas de los microtubérculos de ñame formados en Sistema de Inmersión Temporal (SIT). Como variantes experimentales se plantaron tres categorías de microtubérculos, clasificados según su masa fresca (I. de 0,5 a 0,9 g; II. de 1,0 a 2,9 g; III. igual o mayor de 3,0 g), plantas in vitro previamente aclimatadas y corona de tubérculo. Se evaluó el efecto de la masa fresca de los microtubérculos sobre su brote, supervivencia y posterior desarrollo de las plantas derivadas de ellos en campo. Con los microtubérculos de ñame, con una masa fresca igual o superior a 3,0 g, se alcanzó el más alto porcentaje de brotación (91,30%) y supervivencia de las plantas (96,50%), así como las mejores respuestas en los caracteres cuantitativos que se evaluaron en campo. Estos resultados confirmaron la importancia de la masa fresca de los microtubérculos para ser empleados como material vegetal de plantación directo en campo.

Microtubers in some plant species represent an important alternative crop-planting material. The presentwork involved field work for evaluating the morphoagronomic response of plants obtained from yam microtubersproduced in a temporary immersion system (TIS). Three categories of microtuber were planted asexperimental variants; they were classified by fresh mass (1 - 0.5 to 0.9 g, 2 - from 1.0 to 2.9 g and 3 - equal to or greater than 3.0 g), previously in vitro-acclimated plants and tuber crowns. The effect of microtuber freshweight on their sprouting, survival and later development of the plants derived from them in the field were evaluated. The highest sprouting (91.30%) and plant survival percentages (96.50%) and the best response in quantitative traits evaluated in the field were obtained with yam microtubers having a fresh mass equal to or greater than 3.0 g. These results confirmed the importance of microtubers’ fresh weight for using them as plant material in direct planting in the field.

Effects of plant lectin from cobra lily, Arisaema curvatum Kunth on development of melon fruit fly, Bactrocera cucurbitae (Coq.).

The lectin from tubers of cobra lily, Arisaema curvatum Kunth was purified by affinity chromatography using asialofetuin-linked amino activated porous silica beads. The concentration dependent effect of lectin was studied on second instar larvae (64-72 hr) of Bactrocera cucurbitae (Coq.). The treatment not only resulted in a significant reduction in the percentage pupation and emergence of the adults from treated larvae but it also prolonged the remaining larval development period. A very low LC50 value, 39 mgl(-1) of lectin was obtained on the basis of adult emergence using probit analysis. The activity of three hydrolase enzymes (esterases, acid and alkaline phosphatases), one oxidoreductase (catalase) and one group transfer enzyme (GSTs: Glutathione S-transferases) was assayed in second instar larvae under the influence of the LC50 of lectin at increasing exposure intervals (0, 24, 48 and 72 hr). The Arisaema curvatum lectin significantly decreased the activity of all the enzymes except for esterases, where the activity increased as compared to control at all exposure intervals. The decrease in pupation and emergence as well as significant suppression in the activities of two hydrolases, one oxidoreductase and one GST enzyme in treated larvae of B. cucurbitae indicated that this lectin has anti-metabolic effect on the melon fruit fly larvae.