Polyphenols in alfalfa leaf concentrates

Hernández, Teresa; Hernández, Amelia; Martínez, M.C.

doi:10.1021/jf00006a025

Cited by 18 publications

(14 citation statements)

References 6 publications

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“…Saponin levels can be reduced of roughly 50% with respect to the initial content in the plant if an appropriate pH for coagulation and washing is used (Livingston et al, 1979). Similarly, coumestrol and other different soluble polyphenolics found in alfalfa can be reduced of roughly from 30 to 75% if the final protein preparation is washed with ethanol or mixtures of water/ethanol (Rambourg and Monties, 1983), or water/2-propanol (Hernandez et al, 1991). These results are confirmed at the industrial scale: in the previously mentioned Pro-Xan process the measurement of the coumestrol content in different preparations has revealed large differences according to the operational conditions chosen and has indicated the best choice for reduction to acceptable values (Knuckles et al, 1976).…”

Section: Antinutritional Components Present In Protein Concentratesmentioning

confidence: 99%

Protein extraction from biomass in a bioethanol refinery – Possible dietary applications: Use as animal feed and potential extension to human consumption

Chiesa

Gnansounou

2011

Bioresource Technology

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Section: Antinutritional Components Present In Protein Concentratesmentioning

confidence: 99%

Protein extraction from biomass in a bioethanol refinery – Possible dietary applications: Use as animal feed and potential extension to human consumption

Chiesa

Gnansounou

2011

Bioresource Technology

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“…High nutritional quality of legumes have been determined by the high content of good quality protein and carbohydrates (Cook 1999). In addition to the nutritional components that are important to its use as an animal feed or as food supplements, legumes also contain numerous secondary metabolites that are important in human nutrition (Hatfield 1990;Hernandez et al 1991;Grela and Günter 1995;Oleszek 2000). They are one of the richest sources of chlorophyll and vitamin C, E, B 1 , B 2 , B 6 , B 12 , niacin, folic acid, biotin, inositol, choline, some digesting enzymes and β-carotene (Duke 1992).…”

Section: Introductionmentioning

confidence: 99%

Effect of Various Host-Plants on the Population Growth and Development of The Pea Aphid

Goławska¹

2010

Journal of Plant Protection Research

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Abstract:The performance of the pea aphid, Acyrthosiphon pisum Harris (Homoptera: Aphididae) was studied on several Fabaceae species including: pea (Pisum sativum), broad bean (Vicia faba), alfalfa (Medicago sativa), bean (Phaseolus vulgaris) and red clover (Trifolium pratense). Alfalfa, bean and red clover were less accepted by the pea aphid than pea and broad bean. The pea aphid fed on the alfalfa, bean and red clover showed longer pre-reproductive, and shorter reproductive and post-reproductive periods. Alfalfa, bean and red clover also shortened and decreased fecundity of the pea aphid. Mean survival of the pea aphids fed on red clover and bean plants was reduced in comparison to pea aphid fed on pea and broad bean. The other studied population parameters: intrinsic rate of natural increase (r m ), net reproduction (R 0 ) and mean generation time were also reduced in the case of the pea aphid on alfalfa, red clover and bean. The study of aphid development and reproduction demonstrated that pea and broad bean are suitable host plants for A. pisum while alfalfa, red clover and bean are not. It is likely that the rejection of alfalfa, red clover and bean by A. pisum was caused by chemical factors in these hosts.

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“…Alfalfa is used not only for edible -177 -use but also for treating diseases like asthma, coprostasis and sitotoxism. Previous investigations have discovered that some polyphenols can be extracted from alfalfa [1]. Stochmal et al showed that apigenin and luteolin are present in alfalfa [2].…”

Section: Introductionmentioning

confidence: 99%

Extraction of Apigenin and Luteolin from Leaves of Alfalfa (<i>Medicago sativa</i> L.) Using Mixtures of Liquid Carbon Dioxide and Ethanol

Mishima

Kawamura

Kawakami

et al. 2015

SERDJ

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The extraction of apigenin and luteolin from the alfalfa leaves; Medicago sativa (L.) using mixtures of liquid carbon dioxide (CO 2 ) was performed at 5, 20 and 25 ºC. The extraction pressure was from 8.5 to 14 MPa.The extraction yields were compared with yields obtained by other solvent extraction methods, such as pure liquid CO 2 extraction and conventional alcohol (methanol or ethanol) extraction. We conducted qualitative and quantitative analyses for luteolin and apigenin in the extract using HPLC and analyzed the extraction behavior. The effect of three operating parameters, temperature, pressure and composition of ethanol in the liquid CO 2 solution, on the extraction yield was investigated using the single-factor method.The yields of luteolin and apigenin in the extraction were significantly improved by adjusting the operating temperature and amount of ethanol in the liquid CO 2 solution, whereas a change in the selectivity of the extract was not observed.

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Polyphenols in alfalfa leaf concentrates

Cited by 18 publications

References 6 publications

Protein extraction from biomass in a bioethanol refinery – Possible dietary applications: Use as animal feed and potential extension to human consumption

Protein extraction from biomass in a bioethanol refinery – Possible dietary applications: Use as animal feed and potential extension to human consumption

Effect of Various Host-Plants on the Population Growth and Development of The Pea Aphid

Extraction of Apigenin and Luteolin from Leaves of Alfalfa (<i>Medicago sativa</i> L.) Using Mixtures of Liquid Carbon Dioxide and Ethanol

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