著者

木戸 めぐみ 三反田 詩織 倉田 理恵 寺原 典彦 吉元 誠 キド メグミ サンタンダ シオリ クラタ リエ テラハラ ノリヒコ ヨシモト マコト Megumi Kido Shiori Santanda Rie Kurata Norihiko Terahara Makoto Yoshimoto

出版者

鹿児島女子短期大学附属南九州地域科学研究所

雑誌

南九州地域科学研究所所報 (ISSN:09110275)

巻号頁・発行日

no.30, pp.7-12, 2014

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b-Amylase [EC 3.2.1.1] is an important enzyme for the industrial production of maltose as sweetener and as protective of starch degradation in food processing. Effects of polyphenolics, anthocyanin dyes and caffeic aid-derivatives prepared from sweetpotato on sweetpotato b-amylase were investigated for its industrial utilization. Crude extract of anthocyanin dyes did not inhibit b-amylase activity at a concentration of 2.0 mg/ml reaction mixture. In caffeoyl acid-derivatives, 3,4-dicaffeoyl-quinic acid had no inhibitory effect at a concentration of 2.0 mg/ml. Caffeic acid, chlorogenic acid, and 3,5-dicaffeoyl-quinic acid showed the inhibitory activity of about 20% against b-amylase at the same concentration.

著者

Takashi Ichiyanagi Masayuki Nashimoto Norihiko Terahara

出版者

The Pharmaceutical Society of Japan

雑誌

BPB Reports (ISSN:2434432X)

巻号頁・発行日

vol.4, no.4, pp.136-141, 2021 (Released:2021-09-02)

参考文献数

21

被引用文献数

7

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Ternatins, polyacylated anthocyanins that contain two or more aromatic acyl groups, are found in the petals of butterfly pea (Clitoria ternatea L.). We examined the gastrointestinal absorption of ternatins in rats after oral administration of the extract of the butterfly pea petals. Ingested ternatins were absorbed rapidly in the gastrointestinal tract in their original acylated forms. Nine ternatins were detected, together with preternatin A3, in rat blood plasma at 15 min after oral administration. After a single oral dose of 0.0527 mmol/kg ternatin, the maximum plasma concentration and area under the plasma concentration curve for total ternatin was 0.141 ± 0.035 μM and 16.398 ± 1.542 μM·min, respectively, during the 8-h period post-administration. The absorption of ternatins in blood plasma tended to negatively correlate with increasing order of molecular weight; however, ternatins carrying symmetrical substitution patterns and glucosyl terminals on the both side chains at the 3′ and 5′ positions of the aglycone were exceptionally bioavailable.