Abstract

Saffron (Crocus sativus L.) petal is the main by-product of saffron processing, which is produced in large amounts annually. The objectives of this study were to study the antioxidant and radical-scavenging activity of saffron petal extracts. Saffron petal extract was γ-irradiated to different doses (0, 10, 20, 30, and 40 kGy). The antioxidant activity of irradiated and nonirradiated saffron petal extract was evaluated using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free-radical method. The total antioxidant activity of nonirradiated (0 kGy) and irradiated (10, 20, 30 and 40 kGy) samples of saffron petal was 20, 66, 61, 53, and 54%, respectively. The IR spectra of γ-irradiated and nonirradiated saffron petals revealewd an increase in the content of phenolic and flavonoid components of saffron petals with increasing dose up to 30 kGy. Thus, γ-irradiation allows enhancement of the antioxidant activity and content of phenolic and flavonoid components in saffron petals, with 20 kGy being an optimum dose.

中文翻译：

---

γ射线辐照对藏红花花瓣中酚类物质和抗氧化活性的影响

摘要

藏红花（番红花L.）花瓣是藏红花加工的主要副产品，每年大量生产。这项研究的目的是研究藏红花花瓣提取物的抗氧化和清除自由基的活性。将番红花花瓣提取物用不同剂量（0、10、20、30和40 kGy）进行γ射线照射。辐照和未辐照的藏红花花瓣提取物的抗氧化活性均使用2,2-二苯基-1-吡啶并肼基（DPPH）自由基方法进行了评估。藏红花花瓣未辐照（0 kGy）和辐照（10、20、30和40 kGy）样品的总抗氧化活性分别为20％，66％，61、53和54％。γ辐照和未辐照的藏红花花瓣的红外光谱显示，随着剂量增加至30 kGy，藏红花花瓣的酚类和类黄酮成分含量增加。从而，