Jhanani G K, AlSalhi Mohamad S, T Naveena, Shanmuganathan Rajasree
University Centre for Research & Development, Chandigarh University, Mohali, 140103, India.
Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box: 2455, Riyadh-11451, Saudi Arabia.
Environ Res. 2024 Oct 1;258:119368. doi: 10.1016/j.envres.2024.119368. Epub 2024 Jun 6.
The most recent advancement in food packaging research involves improving the shelf life of perishable foods by utilising bio-based resources that are edible, eco-friendly, and biodegradable. The current study investigated the effect of edible pectin coating on mature green tomatoes to improve shelf life and storage properties. Zucchini pectin was used to make edible coating. The antimicrobial and antioxidant properties of extracted pectin were investigated. The findings indicated that the extracted pectin had antimicrobial (Staphylococcus aureus, Escherichia coli, and Aspergillus niger) and antioxidant (34.32% at 1 mg/mL) properties.Tomatoes were immersed in pectin solutions of varying concentrations, 1, 3, and 5% (w/v). Physiological evaluations of weight loss, total sugar content, titratable acidity pH, and ascorbic acid were performed on tomatoes during their maturing stages of mature green, light red, pure red, and breaking. Coating the tomatoes with pectin (5%) resulted in minimal weight loss while increasing the retention of total sugar, ascorbic acid, and titratable acidity. The shelf life of the pectin-coated tomatoes was extended to 11 days, while the uncoated control tomatoes lasted 9 days. Thus, a 5% edible pectin solution was found to be effective in coating tomatoes. The current study suggests that using 5% pectin as an edible coating on tomatoes can delay/slow the ripening/maturing process while also extending the shelf-life of tomatoes without affecting their physiochemical properties, which is scalable on a large scale for commercial purposes.
食品包装研究的最新进展包括利用可食用、环保且可生物降解的生物基资源来延长易腐食品的保质期。当前的研究调查了可食用果胶涂层对成熟绿番茄的影响,以改善其保质期和储存特性。西葫芦果胶被用于制作可食用涂层。对提取的果胶的抗菌和抗氧化特性进行了研究。研究结果表明,提取的果胶具有抗菌(针对金黄色葡萄球菌、大肠杆菌和黑曲霉)和抗氧化(在1毫克/毫升时为34.32%)特性。番茄被浸泡在浓度分别为1%、3%和5%(w/v)的不同果胶溶液中。在番茄成熟的绿熟期、浅红期、纯红期和破果期对其进行了失重、总糖含量、可滴定酸度pH值和抗坏血酸的生理评估。用果胶(5%)对番茄进行涂层处理导致失重最小,同时提高了总糖、抗坏血酸和可滴定酸度的保留率。果胶涂层番茄的保质期延长至11天,而未涂层的对照番茄持续了9天。因此,发现5%的可食用果胶溶液对番茄涂层有效。当前的研究表明,在番茄上使用5%的果胶作为可食用涂层可以延迟/减缓成熟/成熟过程,同时延长番茄的保质期,而不影响其理化性质,这在商业规模上是可扩展的。