Shizuoka Prefectural Research Institute of Agriculture and Forestry, Iwata, Japan.
National Agriculture and Food Research Organization, Tsukuba, Japan.
Biosci Biotechnol Biochem. 2020 Jun;84(6):1211-1220. doi: 10.1080/09168451.2020.1729089. Epub 2020 Feb 20.
Our previous study revealed that gamma-aminobutyric acid (GABA) in Earl's muskmelon is more concentrated in the inner than the outer parts of the fruit. Here, the GABA and antioxidant capacity of the placental tissue of muskmelon, which is considered waste, were evaluated for possible use as a source of bioactive compounds. The concentrations of GABA and related substances in the placental tissue were significantly higher than in the fleshed pulp, whereas glutamic acid and sugar levels were significantly lower. The two sites showed no difference in GAD activity. Furthermore, the placental site showed high antioxidant capacities based on 2,2-diphenyl-1-picrylhydrazyl and oxygen radical absorbance capacity for hydrophilic compounds assays compared with the fleshed pulp, because of the higher levels of total phenolic and L-ascorbic acids. Therefore, the placental tissue of muskmelons may be useful for developing functional foods, which would also reduce the amount of residues during muskmelon processing.
我们之前的研究表明，香瓜中的γ-氨基丁酸（GABA）在果实内部的浓度高于外部。在这里，我们评估了被认为是废物的香瓜胎座组织中的 GABA 和抗氧化能力，以将其作为生物活性化合物的潜在来源。胎座组织中 GABA 和相关物质的浓度明显高于果肉组织，而谷氨酸和糖的水平明显较低。这两个部位的 GAD 活性没有差异。此外，与果肉组织相比，胎座组织基于 2,2-二苯基-1-苦基肼和氧自由基吸收能力亲水性化合物测定，具有较高的总酚和 L-抗坏血酸水平，表现出较高的抗氧化能力。因此，香瓜的胎座组织可能可用于开发功能性食品，这也将减少香瓜加工过程中的残留物量。
