Effect Of Uv C Hormesis On Quality Attributes Of Tomatoes During Post Treatment Handling
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Effect of UV-C Hormesis on Quality Attributes of Tomatoes During Post Treatment Handling
"Effect of UV-C Hormesis on Quality Attributes of Tomatoes during Post treatment Handling Post harvest losses are quite high in fresh fruits and vegetables. Although refrigeration is an effective method of storage, its advantage is limited to some crops that are not susceptible to chilling injury. Tomato (Lycopersicon esculentum Mill.) is one such crop where other alternatives are sought for. Experiments were conducted to assess the effect of post-harvest treatment with artificial ultraviolet (UV-C) radiation (~254 nm) on quality and physiology of treated tomatoes during post treatment handling. Antioxidant composition of tomatoes was studied in relation to the consequence of UV irradiation. Tomato fruits (variety DRK-453) were irradiated (3.7 kJ/m2) at mature green stage and stored at 13oC and 95% RH along with a set of control. The tomatoes were randomly sampled after 10, 20 and 30 days from the cold storage chamber, and ripened for 7 and 14 days at room temperature and analyzed for different quality parameters. The results showed that post-harvest UV treatment significantly reduced the surface color change of tomatoes whereas the other quality parameters such as TSS, titratable acidity, pH and TSS/acidity ratio were not influenced. This indicates that ripening process had similar pace in both control and UV treated fruits. Apparent firmness observed in the irradiated fruits was not reflected in the objectively measured firmness values. Today, estimation of antioxidant activity has become an important parameter to evaluate the nutritional quality of food. In tomato fruit the carotenoid lycopene is the main phytochemical purported to carry benefit to human health. UV treatment induced a significant decrease in the lycopene content of tomatoes in the later stage during handling. The other antioxidant components namely, ascorbic acid and total phenolic contents increased with the increase in storage and ripening period. The significantly" --
Food Losses, Sustainable Postharvest and Food Technologies
Author: Charis M. Galanakis
language: en
Publisher: Academic Press
Release Date: 2021-05-19
The urgent need for sustainability within the food producing industries and agriculture has turned the interest of research to investigate new non-thermal technologies, nanotechnologies and other practices in postharvest treatment of crops and fruits. Subsequently, there is a need for a new guide covering the latest developments in this particular direction. Food Losses, Sustainable Postharvest and Food Technology provides solutions to postharvest treatment technologies. It explores modern non-thermal technologies, focusing on postharvest losses and quality of fresh-cut products. In addition, it discusses the implications for postharvest technology research, policies and practices. It also focuses on the most recent advances in the field, while it explores the potentiality and sustainability of already commercialized processes and products. Aimed at professionals working in the food industry and agriculture, it could also be utilized as a handbook for anyone dealing with sustainability issues of food production in spite of postharvest treatment. - Thoroughly explores modern non-thermal technologies in postharvest treatment - Discusses the implications for postharvest technology research, policies and practices - Analyzes the potentiality and sustainability of already commercialized processes and products
Phytochemicals
Author: Venketeshwer Rao
language: en
Publisher: BoD – Books on Demand
Release Date: 2015-09-30
Global dietary recommendations emphasize the consumption of plant-based foods for the prevention and management of chronic diseases. Plants contain many biologically active compounds referred to as phytochemicals or functional ingredients. These compounds play an important role in human health. Prior to establishing the safety and health benefits of these compounds, they must first be isolated, purified, and their physico-chemical properties established. Once identified, their mechanisms of actions are studied. The chapters are arranged in the order from isolation, purification and identification to in vivo and clinical studies, there by covering not only the analytical procedures used but also their nutraceutical and therapeutic properties.