Application of active packaging technology to extend the shelf-life of diced onions

Nova Agi Inc.是一家加拿大新鲜蔬菜、水果和其他即食产品(如果汁、鲜切蔬菜)的生产商。该公司生产的产品之一是即食即用的新鲜切丁洋葱，适用于餐馆和餐饮，以及几乎没有时间准备食物的消费者。洋葱丁必须具有最佳的卫生、感官和营养特性，才能确保消费者的接受。此外，必须有足够的保质期，以促进产品的分销和销售。然而，要实现洋葱丁的长货架期是具有挑战性的，因为受伤的植物组织中的营养物质会泄漏，而且顶空中存在高水分活度，这两者都倾向于促进微生物的生长。此外，由于呼吸作用和生化活动导致的累积变质进一步缩短了洋葱丁的货架期。Nova Agi Inc.有兴趣探索不同的方法来延长他们的包装洋葱丁产品的保质期，方法是采用气调和活性包装相结合的方法

Nova Agri Inc. is a Canadian producer of fresh vegetables, fruits, and other ready-to-eat products (e.g., juice, fresh-cut vegetables). One of the products produced by the company is ready-to-eat/-use fresh-cut diced onions, intended for restaurants and caterings, as well as consumers who have little time for food preparation. Diced onion must have optimum hygienic, sensorial, and nutritional properties in order to ensure consumer's acceptance. Moreover, adequate shelf life must be available in order to facilitate product distribution and sales. However, achieving long shelf-life for diced onion is challenging due to the leaking of nutrients from injured plant tissues and high water activity present in the headspace, both of which tend to promote microbial growth. In addition, cumulative deterioration due to respiration and biochemical activities further reduce the shelf-life of the diced onions. Nova Agri Inc. is interested to explore different methods to increase the shelf-life of their packaged diced onion products by exploiting combined modified atmosphere and active packaging approach