Influence of gamma radiation on microbial contamination in chilli and coriander powder: Enhancement of shelf life and stability of physico chemical parameters

IF 1.9 4区物理与天体物理 Q2 PHYSICS, NUCLEAR

Nuclear Physics A Pub Date : 2026-04-01 Epub Date: 2026-01-08 DOI:10.1016/j.nuclphysa.2026.123325

S. Rajput , D. Singh , A.G. Dimri , M. Das

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引用次数: 0

Abstract

The study was designed to investigate the different doses of gamma radiation (2.5, 5, 7.5 and 10 kGy) on the microbial load and physicochemical stability of branded and non- branded chilli and coriander powder over a 150 day storage period at room temperature (27 ± 2 °C) and compared with the control sample (unirradiated). Several bacterial species, Bacillus cereus, Salmonella sp. and Sulphite reducing Clostridia were identified in unirradiated spice samples. Results also indicated that gamma radiation processing dose is inversely proportion to the reduction of total microbial population in both the spice samples. Dose of 7.5 kGy for non-branded chilli and coriander powder and 5 kGy for branded showed significant (p < 0.05) removal of microbial load in the studied spices. Insignificant differences were noted in the physico chemical properties including moisture, pH, total ash, acid insoluble ash and crude fibre of spices after 150 days of storage. Acceptability of the irradiated product was assessed by induced radioactivity. These findings suggest that gamma radiation dose of 7.5 kGy for both spice samples had an excellent response for inactivation of naturally occurring microbial flora with insignificant (p > 0.05) changes in physico- chemical quality attributes and thus enhancing the shelf life of chilli and coriander powder.

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γ辐射对辣椒和香菜粉微生物污染的影响：提高保质期和理化参数的稳定性

本研究旨在探讨不同剂量γ辐射（2.5、5、7.5和10 kGy）对品牌和非品牌辣椒香菜粉在室温（27±2°C）下150 d贮藏期微生物负荷和理化稳定性的影响，并与对照样品（未辐照）进行比较。在未辐照的香料样品中鉴定出蜡样芽孢杆菌、沙门氏菌和亚硫酸盐还原梭菌等几种细菌。结果还表明，伽玛辐射处理剂量与香料样品中微生物总数的减少成反比。无品牌辣椒粉和香菜粉的剂量为7.5 kGy，品牌粉的剂量为5 kGy，表明在所研究香料中微生物负荷的去除显著（p < 0.05）。贮藏150 d后，香料的水分、pH、总灰分、酸不溶灰分、粗纤维等理化性质差异不显著。辐照产物的可接受性通过诱导放射性进行评估。这些结果表明，7.5 kGy的伽马辐射剂量对天然存在的微生物菌群的灭活有很好的响应，而物理化学品质属性的变化不显著（p > 0.05），从而延长了辣椒和香菜粉的保质期。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Physics A 物理-物理：核物理

CiteScore

3.60

自引率

7.10%

发文量

113

审稿时长

61 days

期刊介绍： Nuclear Physics A focuses on the domain of nuclear and hadronic physics and includes the following subsections: Nuclear Structure and Dynamics; Intermediate and High Energy Heavy Ion Physics; Hadronic Physics; Electromagnetic and Weak Interactions; Nuclear Astrophysics. The emphasis is on original research papers. A number of carefully selected and reviewed conference proceedings are published as an integral part of the journal.