Thi Le, Dung Huynh published the artcileBioactive and Physicochemical Characteristics of Natural Food: Palmyra Palm (Borassus flabellifer Linn.) Syrup, Name: 2,3,5-Trimethylpyrazine, the main research area is bioactive physicochem characteristic natural food palmyra palm; Borassus flabellifer L.; in vitro antioxidant activity; palmyra palm syrup; physicochemical characteristics; ultrafiltration; volatile compounds.
Palmyra palm syrup, produced from Borassus flabellifer flowers sap, is rich in nutrients and minerals and has unique flavors. This study evaluated the in vitro antioxidant activity, physicochem. characteristics, and Maillard reaction products of palmyra palm syrup prepared by thermal and ultrafiltration processes. Palmyra palm syrup prepared by a thermal process had smaller L*, b* values, and larger a* values than that prepared by an ultrafiltration process. Palmyra palm syrup contained 10 vitamins, the most abundant being vitamin E. Overall, 38 volatile compounds were found and classified into six groups in the order of alcs. > acids > ketones > sulfurs > pyrazines> phenols and aldehyde. Volatile compounds depended on concentration, temperature, and ultrafiltration process. Protein content decreased because of participation in the Maillard reaction and increased 5-hydroxymethylfurfural (HMF) and total phenolic content. The HMF content was very low (0.02-14.95 mg/100 g). The radical scavenging activity of 2,2-diphenyl-1-1 picrylhydrazyl and 2,20-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) in palmyra palm syrup with thermal process was higher than with ultrafiltration. This study established that ultrafiltration pretreatment of palmyra palm syrup generated a good appearance and reduced the HMF content, however, it neg. affected the volatile compounds and physicochem. characteristics.
Biology (Basel, Switzerland) published new progress about Acids Role: ANT (Analyte), ANST (Analytical Study). 14667-55-1 belongs to class pyrazines, name is 2,3,5-Trimethylpyrazine, and the molecular formula is C7H10N2, Name: 2,3,5-Trimethylpyrazine.