Esparza-Martínez Francisco J, Miranda-López Rita, Mata-Sánchez Sara M, Guzmán-Maldonado Salvador H
Posgrado de Ingeniería Bioquímica, Tecnológico de Celaya, Antonio García Cubas Pte. No. 600 esq. Av. Tecnológico, C.P. 38010, Celaya, Guanajuato, México.
Chemical Department, Brigham Young University, C100 BNSN, Provo, UT, 84602, USA.
Plant Foods Hum Nutr. 2016 Sep;71(3):294-300. doi: 10.1007/s11130-016-0559-0.
The mandarin industry is generating more waste due to the increasing demand for juice. In this study, extractable and non-extractable phenolics as well as 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), ferric reducing ability of plasma (FRAP), and oxygen radical absorbance capacity (ORAC) antioxidant activities in Satsuma mandarin waste dried at different temperatures were determined. The amounts of non-extractable total phenols, total flavonoids, and condensed tannins measured in mandarin waste dried at 120 °C were 39.4, 44.3, and 45.6 %, respectively, which were higher than those of fresh-mandarin waste. Dried mandarin waste is rich in extractable and non-extractable hesperidin (259.86 and 182.52 mg/g, respectively) and eriocitrin (85.12 and 197.24 mg/g, respectively), as well as non-extractable gallic acid (36.08 μg/g). The antioxidant capacities of extractable and non-extractable phenolics, from the highest to the lowest, were ABTS > ORAC > DPPH > FRAP and ORAC > ABTS > DPPH > FRAP, respectively. The information reported here may encourage mandarin industry operators to re-evaluate their by-products, extending the application of mandarin fruits and reducing waste.
由于对果汁的需求不断增加，柑橘产业产生的废弃物也越来越多。在本研究中，测定了不同温度干燥的温州蜜柑废弃物中可提取和不可提取的酚类物质，以及2,2-二苯基-1-苦基肼（DPPH）、2,2'-联氮-双-（3-乙基苯并噻唑啉-6-磺酸）（ABTS）、血浆铁还原能力（FRAP）和氧自由基吸收能力（ORAC）的抗氧化活性。在120℃干燥的柑橘废弃物中测得的不可提取总酚、总黄酮和缩合单宁含量分别为39.4%、44.3%和45.6%，高于新鲜柑橘废弃物。干燥的柑橘废弃物富含可提取和不可提取的橙皮苷（分别为259.86和182.52mg/g）和圣草次苷（分别为85.12和197.24mg/g），以及不可提取的没食子酸（36.08μg/g）。可提取和不可提取酚类物质的抗氧化能力从高到低分别为ABTS＞ORAC＞DPPH＞FRAP和ORAC＞ABTS＞DPPH＞FRAP。此处报告的信息可能会促使柑橘产业经营者重新评估其副产品，扩大柑橘类水果的应用范围并减少废弃物。
