Bookcover of TRADITIONAL SOUTH AFRICAN LEAFY PLANTS
Booktitle:

TRADITIONAL SOUTH AFRICAN LEAFY PLANTS

SAFETY FOR HUMAN CONSUMPTION

LAP LAMBERT Academic Publishing (2010-05-19 )

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ISBN-13:

978-3-8383-6218-2

ISBN-10:
3838362187
EAN:
9783838362182
Book language:
English
Blurb/Shorttext:
Leafy vegetables are commonly consumed as food or medicine by people in the KwaZulu Natal province of South Africa. Chemical and bioassays were carried out on 18 leafy plants to determine whether they are safe for human consumption. All 18 vegetables were found to be free of cyanogenic glycosides, phytic acid and saponins(except for M. balsamina). Oxalic acid was found in S. nigrum, P. oleracea and M. balsamina. Alkaloids were found in 14 of the plants with Portulaca oleracea having the highest content. 9 of the plants showed trypsin inhibition activity. None of the leafy vegetables showed mutagenic potential, except 10 000 µg/ml organic extract of S. occidentalis. All 18 organic extracts showed less than 50% brine shrimp toxicity and MTT cytotoxicity. Seven aqueous extracts namely, P. viscosa, A. dubius, J. flava, B. pilosa, S. occidentalis, C. album and C. triloba showed more than 50% brine shrimp toxicity (100 µg/ml). 4 aqueous extracts namely, J. flava, A. gangetica, M. balsamin and S. occidentalis, showed more than 50% cytotoxicity(1 000 µg/ml). Caution needs to be maintained with the consumption of certain leafy vegetables evaluated in this study, especially S. occidentalis.
Publishing house:
LAP LAMBERT Academic Publishing
Website:
https://www.lap-publishing.com/
By (author) :
Mashudu Mudzwiri, Dr Lalini Reddy
Number of pages:
132
Published on:
2010-05-19
Stock:
Available
Category:
Botany
Price:
59.00 €
Keywords:
Leafy Vegetables, food, medicinal antinutrients, chemical analysis, toxicity and mutagenicity

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