title: UV-induced changes of active components and antioxidant activity in postharvest pigeon pea [Cajanus cajan (L.) Millsp.] leaves.
abstract: In this study, the effect of UV irradiation (UV-A, UV-B, and UV-C) on phytochemicals, total phenolics, and antioxidant activity of postharvest pigeon pea leaves was evaluated. The response of pigeon pea leaves to UV irradiation was phytochemical specific. UV-B and UV-C induced higher levels of phytochemicals, total phenolics, and antioxidant activity in pigeon pea leaves compared with UV-A. Furthermore, UV-B irradiation proved to possess a long-lasting effect on the levels of phenolics and antioxidant activity. After adapting for 48 h at 4 °C following 4 h UV-B irradiation, total phenolics and antioxidant activity were approximately 1.5-fold and 2.2-fold increased from 39.4 mg GAE/g DM and 15.0 μmol GAE/g DM to 59.1 mg GAE/g DM and 32.5 μmol GAE/g DM, respectively. These results indicate that UV irradiation of pigeon pea leaves can be beneficial in terms of increasing active components and antioxidant activity.
authors: Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China.
authors: Zuo-Fu
authors: ZF
authors: Wei
authors: Meng
authors: M
authors: Luo
authors: Chun-Jian
authors: CJ
authors: Zhao
authors: Chun-Ying
authors: CY
authors: Li
authors: Cheng-Bo
authors: CB
authors: Gu
authors: Wei
authors: W
authors: Wang
authors: Yuan-Gang
authors: YG
authors: Zu
authors: Thomas
authors: T
authors: Efferth
authors: Yu-Jie
authors: YJ
authors: Fu
mesh_terms: D000975:Antioxidants / Q000032:analysis*; D036561:Cajanus / Q000737:chemistry* / Q000254:growth & development / Q000528:radiation effects; D010636:Phenols / Q000032:analysis; D010936:Plant Extracts / Q000032:analysis*; D018515:Plant Leaves / Q000737:chemistry / Q000254:growth & development / Q000528:radiation effects
chemical_list: D000975:Antioxidants; D010636:Phenols; D010936:Plant Extracts