نتایج جستجو برای: pennogenin steroidal saponins

تعداد نتایج: 18437  

Journal: :reports of biochemistry and molecular biology 0
mozhgan soltani tel: +98 51 36080498, fax: +98 51 36080498 kazem parivar department of biology, science and research branch, islamic azad university, tehran, iran javad baharara department of biology, mashhad branch, islamic azad university, mashhad, iran mohammad amin kerachian department of medical genetics, faculty of medicine, mashhad university of medical sciences, mashhad, iran javad asili department of pharmacognosy, school of pharmacy, biotechnology research center, mashhad university of medical sciences, mashhad, iran

background: holothuroids (sea cucumbers) are members of the phylum echinodermata, which produce saponins. saponins exhibit a wide spectrum of pharmacological and biological activities. in this study, we isolated the crude saponins from the body wall of the dominant iranian species of sea cucumber, holothuria leucospilota (h. leucospilota). the purpose of this study was to confirm the presence o...

Journal: :The British journal of nutrition 2008
David Knudsen Fredrik Jutfelt Henrik Sundh Kristina Sundell Wolfgang Koppe Hanne Frøkiaer

Saponins are naturally occurring amphiphilic molecules and have been associated with many biological activities. The aim of the present study was to investigate whether soya saponins trigger the onset of soyabean-induced enteritis in Atlantic salmon (Salmo salar L.), and to examine if dietary soya saponins increase the epithelial permeability of the distal intestine in Atlantic salmon. Seven ex...

2010
Ikbal Chaieb

Chaieb, I. 2010. Saponins as insecticides: a review. Tunisian Journal of Plant Protection 5: 3950. Saponins are heterosides (substances containing in their structure one or more sugar molecule) of plant origin. This type of molecules has an interesting pesticide potential and this review constitutes an inventory of principal researches realized in this direction. In the first part of this revie...

2012
S. Khanam

General phytochemical screening of the aqueous extract of fruits of Solanum xanthocarpum (Solanaceae) revealed the presence of steroids, terpenes, phenolic compounds, saponins, fatty acids, alkaloids. Fractionation of aqueous extract and activity guided isolation resulted in isolation of two white crystalline powder which were subjected to physical, chemical and spectral identification using IR...

2013
Hongmei Zhang Quancheng Zhou

Certain saponins are bioactive compounds with anticancer, antivirus and antioxidant activities. This paper discussed inhibitory effects of saponins from Xanthoceras Sorbifolia on tyrosinase, through the research of the rate of tyrosinase catalyzed L-DOPA oxidation. The inhibition rate of tyrosinase activity presented non-linear changes with the saponins concentration. The rate reached 52.0% whe...

2013
Cornelius Lütz

Etioplasts, Prolamellar Bodies, Saponins, Chromatography Prolamellar body tubules in etioplasts are composed mainly of two saponins. The determination of these saponins in leaves, etioplasts or subfractions of etioplasts is re­ commended to evaluate the concentration of these tubules in a given fraction. Using a densitometer after TLC-separation of the saponins measurements are carried out in a...

2017
Juan Liu Yangrong Xu Jingjing Yang Wenzhi Wang Jianqiang Zhang Renmei Zhang Qingguo Meng

Ocotillol-type saponins are one kind of tetracyclic triterpenoids, sharing a tetrahydrofuran ring. Natural ocotillol-type saponins have been discovered in Panax quinquefolius L., Panax japonicus, Hana mina, and Vietnamese ginseng. In recent years, the semisynthesis of 20(S/R)-ocotillol-type saponins has been reported. The biological activities of ocotillol-type saponins include neuroprotective ...

2014
Yadollah Bahrami Wei Zhang Tim Chataway Chris Franco

Sea cucumbers are prolific producers of a wide range of bioactive compounds. This study aimed to purify and characterize one class of compound, the saponins, from the viscera of the Australian sea cucumber Holothuria lessoni. The saponins were obtained by ethanolic extraction of the viscera and enriched by a liquid-liquid partition process and adsorption column chromatography. A high performanc...

Journal: :International journal of agriculture, environment and food sciences 2021

Yams (Discorea spp) are food security crops which serve as invaluable sources of energy, micronutrients and phytochemicals with numerous health benefits. They show a lot genetic compositional diversity. New biologically active compounds being identified from wild yams. This review focuses on the nutrients, found in yam species their The B group vitamins, vitamin C, pro-vitamin A; copper; mangan...

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