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- W2077202435 abstract "The effects of a crude enzyme extract prepared from Lepidium sativum seeds, on the degradation of three pure glucosinolates (allyl-, benzyl- and 2-phenethyl-) were investigated in the presence of the known enzyme co-factor, ascorbic acid. Isothiocyanates and nitriles were obtained but no thiocyanates. For maximum isothiocyanate formation there was an optimum concentration of ascorbic acid which varied directly with the concentration of substrate but was independent of the particular glucosinolate. Formation of isothiocyanate from any glucosinolate was linear with time but enzymic production of 2-phenethyl isothiocyanate was activated by ascorbic acid to a greater extent than for the other two glucosinolates studied. Isothiocyanate was still the major product even at low pH although the thioglucosidase was only weakly active. Nitrile formation was always erratic in the presence of ascorbic acid. In the absence of ascorbic acid thioglucosidase was still active although to a much lesser extent, but in these circumstances benzyl thiocyanate was an additional product. There is thus a thiocyanate-forming factor in the extract of L. sativum seeds which is inactivated in the presence of ascorbic acid. This factor did not cause the formation of thiocyanate from 2-phenethylglucosinolate." @default.
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- W2077202435 title "Effects of a Lepidium sativum enzyme preparation on the degradation of glucosinolates" @default.
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- W2077202435 doi "https://doi.org/10.1016/s0031-9422(00)82196-2" @default.
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