Lu, Jike published the artcileExtraction and characterization of pectin from Premna microphylla Turcz leaves, Category: alcohols-buliding-blocks, the main research area is Premna leaf pectin response surface methodol microwave pretreatment; Characterization; Pectin; Premna microphylla Turcz leaves.
N this work, response surface methodol. (RSM) and microwave pretreatment were used to extract pectin from Premna microphylla Turcz leaves (PMTL). The process variables were optimized by the isovariant central composite design to improve the pectin extraction yield. The optimum conditions obtained were as follows, extraction time 2 h, temperature 90 °C, pH 2 and liquid-solid (LS) ratio 50 mL/g. The extraction yield was 18.25% under these conditions, which was close to the predicted value (17.60%). Then the pectin was characterized by gas chromatog. (GC), spectrophotometric (UV-visible Spectroscopy) and spectroscopic (Fourier transform IR) methods. The galacturonic acid content was 82.75%, and on this basis, the other monosaccharide composition anal. illustrated that pectin from PMTL was also composed of rhamnose, arabinose, mannose, glucose and galactose in a ratio of 2.96:1.17:1.04:8.07:2.05. The pectin of PMTL had an esterification degree of 62.50% and it showed good antioxidant activity. Taken together, the pectin of PMTL could be used as potential additive in food industry.
International Journal of Biological Macromolecules published new progress about Antioxidants. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Category: alcohols-buliding-blocks.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts