Metabolic behavior of enzymatically modified isoquercitrin by .ALPHA.-amylase and gastric juices
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Accession number;06A0586489
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| Title;Metabolic behavior of enzymatically modified isoquercitrin by .ALPHA.-amylase and gastric juices |
| Author;
TAMURA SATORU
(Osaka Univ.)
TSUJI KOJI
(Osaka Univ.)
MORIWAKI MASAMITSU
(San-ei Gen F.f.i., Inc.)
MURAKAMI NOBUTOSHI
(Osaka Univ.)
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Journal Title;Japanese Journal of Food Chemistry
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Journal Code:L4470A
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ISSN:1341-2094
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VOL.12;NO.3;PAGE.152-156(2005)
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| Figure&Table&Reference;FIG.3, REF.6 |
| Pub. Country;Japan |
| Language;English |
| Abstract;In order to elucidate metabolic behavior of enzymatically modified isoquercitrin (EMI) after oral ingestion, reactants of main eight constituents treated with salivary and pancreatic .ALPHA.-amylase, and gastric juices were respectively analyzed by HPLC quantitation. Among the eight constituents, isoquercitrin (IQC), IG1, and IG2 were revealed to be little submitted to both .ALPHA.-amylase catalyzed hydrolysis. In addition, the remaining five constituents IG3-IG7 were shown to be completely metabolized by the two .ALPHA.-amylase, taking exposure time in the body into account. On the other hand, gastric juice treatment provided no reactants with respect to all substrates even in the coexistence of salivary .ALPHA.-amylase. Consequently, EMI through oral ingestion was deduced to be converged to the three components, IQC, IG1, and IG2, by the action of salivary and pancreatic .ALPHA.-amylase prior to the small intestine. (author abst.) |
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