Rahmani, Zahra published the artcileOptimization of microwave-assisted extraction and structural characterization of pectin from sweet lemon peel, HPLC of Formula: 59-23-4, the main research area is sweet lemon peel pectin microwave assisted extraction structural characteristics; Monosaccharide composition; Physicochemical characterization; Sweet lemon peel pectin.
The microwave-assisted extraction of pectin from sweet lemon peel (SLP) was optimized using Box-Behnken design. The highest pectin yield (25.31%) was observed under optimal condition (microwave power of 700 W, irradiation time of 3 min and pH of 1.5). The physicochem., structural and some bioactivity of the SLP pectin isolated at optimum condition was evaluated. The SLP pectin was rich in galacturonic acid and galactose (87.2 mol%), high in mol. weight (615.836 kDa) and low in degree of esterification (1.2-35.1%). Furthermore, the SLP pectin was composed of 55.7% linear region (homogalacturonan) and 42.2% hairy region (rhamnogalacturonan-I). Also, the FT-IR and H-NMR results confirm the major presence of low methylated galacturonic acid rich structure in the isolated samples. In addition, SLP pectin showed good emulsifying and antioxidant properties. A pseudoplastic flow behavior was observed for SLP pectin solution at higher concentrations (1% w/v <). These results represent an inexpensive source for pectin extraction with high pectin yield and good properties. International Journal of Biological Macromolecules published new progress about Citrus limon. 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, HPLC of Formula: 59-23-4.
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