Volume 17, Issue 98 (2020)
FSCT 2020, 17(98): 41-49 |
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Bakhtiary F, Maghsoudi H, Khorasani S, Akhavan H. Effect of ultraviolet radiation on some quality characteristics of dry pistachio kernel. FSCT 2020; 17 (98) :41-49
URL: http://fsct.modares.ac.ir/article-7-29902-en.html
URL: http://fsct.modares.ac.ir/article-7-29902-en.html
1- Department of Mechanical Engineering of Bio-systems, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
2- Assistant Professor, Department of Mechanical Engineering of Bio-systems, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran , h.maghsoudi@uk.ac.ir
3- Assistant Professor, Department of Food Science and Technology, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
2- Assistant Professor, Department of Mechanical Engineering of Bio-systems, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran , h.maghsoudi@uk.ac.ir
3- Assistant Professor, Department of Food Science and Technology, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
Abstract: (3112 Views)
There are different ways to reduce the risk of spoilage and increase the shelf life of agricultural products, one of which is ultraviolet radiation. The UV irradiation system has seven UV-C lamps, that for microbial deactivation, the effects of lamps number (3, 5 and 7), the distance of lamps from pistachio kernels (10, 20 and 30 cm), and the UV-C radiation time (15, 20 and 30 minutes) were evaluated. Based on Aspergillus flavus inactivation, the application of 3 lamps, the distance of 10 cm, and the irradiation time of 30 minutes were selected as the best treatment for irradiation of dry pistachio kernels. The results indicated that UV-C irradiation had no significant effect on peroxide and acidity values (p <0.05), but UV-C irradiation caused a significant (p<0.05) increases of the total phenolic content in pistachio kernels. According to the panelists scores, the texture of irradiated sample obtained a higher score than the control sample. However, no significant difference was observed in terms of other sensory characteristics (appearance, aroma, and taste) between the irradiated and control samples.
Keywords: Ultraviolet radiation, Pistachio kernel, Sensory evaluation, Peroxide value, Phenolic content
Article Type: Original Research |
Subject:
Food quality control
Received: 2019/01/28 | Accepted: 2020/01/21 | Published: 2020/03/29
Received: 2019/01/28 | Accepted: 2020/01/21 | Published: 2020/03/29
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