Mung bean variety Kampangsean 2 was analyzed during 24-h germination period. Total phenolic content and crude protein content of germinated beans significantly increased with increasing germination period. The 24-h germinated mung beans showed the highest crude protein content but not significantly different compared to that of the 18-h germinated bean. The increase in crude protein content was due to an increase in nonprotein nitrogen, not the protein nitrogen. During germination, the amount of proteins with molecular weight of 20, 29 and 36 kDa gradually decreased. Germination caused an increase in certain amino acids especially phenylalanine. Tryptophan was found to be a limiting amino acid. 1,1-Diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity and ferricreducing antioxidant power (FRAP) of germinated mung beans increased to 31.23 and 61.27%, respectively, after germination for 24 h. The DPPH radical scavenging activity and FRAP decreased about 10 and 20%, respectively, after steaming for 10 min.
Gymnema inodorum (Lour.) Decne or Chiang Da, the local northern Thai vegetable, is renowned for its anti-diabetic and hypoglycemic properties and is highly sought after by the functional food industry. This research investigated the relationship between the physiological characteristics, genetic variation, and chemical compositions of different Chiang Da accessions. Two commercial lines (COM1 and COM2) and eight local accessions (BAC1-8) of Chiang Da were gathered and maintained in the same study plot for the investigation of their morphological characteristics, genetic variation, and nutritional and phytochemical constituents. From the morphological data, the two commercial lines were clearly distinctive with their closely related leaf structures. Random amplification of the polymorphic illustrated the genetic diversity between the local accessions and commercial strains in a similar pattern as described by their morphology characteristics and proximate contents. The phytochemical characteristics, nonetheless, projected the two commercial lines in separate groups. The outcome of this study could be beneficial toward the selection of the Chiang Da strains with specific traits for plant breeding programs of functional food interest.
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