http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
R. M. Esparza-Merino,M. E. Macı´as-Rodrı´guez,E. Cabrera-Dı´az,A. J. Valencia-Botı´n,Y. Estrada-Giro´n 한국식품과학회 2019 Food Science and Biotechnology Vol.28 No.4
The by-products of Hibiscus sabdariffa L. (HsL), obtained after soaking or decoction of the calyces ofColima and Sudan cultivars, were used for pectin extraction. After soaking, the wastes of both cultivars gave higheryields of pectin than those obtained by decoction. Thepectin of the wastes by soaking presented high methoxylgroups, galacturonic acid content, viscosity and gellingcapacity. Pectin of this treatment also exhibited bands inthe regions of 1750 cm-1 and 1630 cm-1 that representsthe C=O stretching vibrations of methyl ester and theamounts and degree of esterification of the HsL pectin. Interestingly, the pectin retained the typical red color offresh HsL calyces. The amounts of anthocyanins andascorbic acid of pectin did not show effects againstpathogenic microorganisms. Nonetheless, pectin of theSudan HsL wastes obtained by soaking, exhibited higherproperties than those of the citric pectin, thus, demonstratingits potential for industrial applications.