☆ 4.7 Article

UV-Induced Changes of Active Components and Antioxidant Activity in Postharvest Pigeon Pea [Cajanus cajan (L.) Millsp.] Leaves

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY (2013)

期刊

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

卷 61, 期 6, 页码 1165-1171

出版社

AMER CHEMICAL SOC

DOI: 10.1021/jf304973f

关键词

flavanoids; stilbenes; antioxidant activity; ultraviolet (UV); pigeon pea leaves

类别

Agriculture, Multidisciplinary Chemistry, Applied Food Science & Technology

资金

Special Fund of Forestry Industrial Research for Public Welfare of China [201004040]
National Forestry Bureau [2012-4-06]
Program for Importation of International Advanced Forestry Science Technology and Heilongjiang Province Science Foundation for Excellent Youths [JC200704]

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摘要

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 degrees 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 mu mol GAE/g DM to 59.1 mg GAE/g DM and 32.5 mu mol 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.

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