摘要
Objectives:The goal of this study was to determine several beneficial and antinutritional compounds in the commercial products of some protein-rich crops.Materials and Methods:Samples of faba bean(Vicia faba),lupin(Lupinus angustifolius),rapeseed press cake(Brassica rapa/napus subsp.Oleifera),flaxseed(Linum usitatissimum),oil hemp seed(Cannabis sativa),buckwheat(Fagopyrum esculentum),and quinoa(Chenopodium quinoa)were purchased from the grocery stores and from the producers.The phytochemicals were analyzed using various validated methods.Results:Rape seed press cake contained the highest contents of phenolics.The highest contents of proanthocyanidins were found in faba bean(470±14 mg/100g DW).Secoisolariciresinol-diglucoside content in the flaxseeds was 138±32 mg/100 g DW and the lignanamide content of hemp seeds was 77±22 mg/100 g DW.The content of phytic acid in rapeseed cake,hemp seed and flaxseed samples was 3.9±0.1,3.5±0.2,and 1.9±0 g/100 g DW,respectively.Rape seed cake contained glucosinolates 2.08±0.74 umol/g DW and faba bean contained vicine and convicine 0.77±0.11 and 0.42±0.02 g/100 g DW,respectively.Quinoa contained saponins 557 mg/100 g DW and after abrasive milling/pearling the content was 36 mg/100 g DW.Generally,the phytochemicals were concentrated in the outer shell of the seed.Inhibitory activities against proteolytic enzymes,trypsin andα-chymotrypsin,varied among the samples analyzed.Highest activity was found in buckwheat samples,whereas lupin and rapeseed press cake had no inhibitory activity against tested enzymes.Conclusions:This paper presented new findings on the contents of phytochemicals in various under-used plant protein sources.
基金
the Strategic Research Program(SRC)Academy of Finland(grant number 293045,project name is Novel protein Sources for Food Security).
