Spoilage indicator film for real-time detecting and monitoring food freshness, has porous cellulose acetate film with highly porous surface to maximize deposition of anthocyanins, thus increasing their availability for interaction with spoilage-associated gases e.g. ammonia and anthocyanin compounds
	KEERTHI P; GOKUL S; RAMAKRISHNAN R
	2024-05-14
专利权人	UNIV ANNA (UYAN-Non-standard)
申请日期	2024-05-14
专利号	IN202441037706-A
成果简介	NOVELTY - Spoilage indicator film comprises a porous cellulose acetate film (202) with a highly porous surface to maximize the deposition of anthocyanins, thus increasing their availability for interaction with spoilage-associated gases such as ammonia; and anthocyanin compounds, derived from natural, food-safe sources, integrated into the porous film as pH-sensitive color indicators, providing real-time visual indication of food spoilage through a color change. USE - Spoilage indicator film for real-time detecting and monitoring of food freshness (claimed). ADVANTAGE - The porous surface of the cellulose acetate film in the spoilage indicator film traps ammonia gas emitted during food spoilage, ensuring prolonged retention and increased contact time between the gas and the anthocyanin-based sensor layer, enabling early and accurate detection of spoilage. The use of natural, food-grade anthocyanin pigments and cellulose acetate in the film ensures compliance with global food safety standards, such as Food Safety and Standards Authority of India (FSSAI) regulations, and provides an environmentally sustainable, versatile solution for monitoring spoilage in various perishable food items DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. a dual-layer design, which comprises a hydrophobic nylon mesh (203) on the food-facing side to ensure compatibility with various packaging formats and protect the sensor layer from moisture and environmental factors; and an adhesive layer that sandwiches the anthocyanin indicator between the nylon mesh and the packaging material, ensuring durability and reliability in high-humidity environments; 2. a method for preparing a food spoilage indicator which involves: (a) extracting anthocyanin pigments from a natural source, such as butterfly pea, using a method selected from the freeze-drying and spray-drying; (b) preparing a pomegranate extract by (i) homogenizing fresh pomegranates using a homogenizer; (ii) stirring the homogenized mixture using a magnetic stirrer; (iii) filtering the stirred mixture through a filtration setup to obtain a clear pomegranate extract; (c) concentrating the pomegranate extract by vacuum evaporation using a rotary evaporator and collecting the concentrate in a container; (d) freeze-drying the concentrated pomegranate extract using a freeze-dryer to obtain a freeze-dried pomegranate powder; (e) incorporating the anthocyanin pigments into a suitable carrier material, such as a porous cellulose acetate film, to form a pH-sensitive sensor; and (f) providing the sensor with a protective layer, such as a nylon mesh, and a release liner to create a food spoilage indicator film; 3. a method for detecting food spoilage using the spoilage indicator film which involves: (a) implementing the film within food packaging; (b) exposing it to spoilage gases such as ammonia; and (c) observing pH-sensitive color changes in the anthocyanin layer as a real time visual indicator of food freshness. DESCRIPTION OF DRAWING(S) - The drawing shows the food spoilage indicator. 201Release liner 202Porous cellulose acetate film 203Hydrophobic nylon mesh
IPC 分类号	B65D-079/02 ; G01N-031/22 ; G01N-033/02 ; G01N-033/12
国家	印度
专业领域	化学化工
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/16772
专题	中国科学院新疆生态与地理研究所
作者单位	UNIV ANNA (UYAN-Non-standard)
推荐引用方式 GB/T 7714	KEERTHI P,GOKUL S,RAMAKRISHNAN R. Spoilage indicator film for real-time detecting and monitoring food freshness, has porous cellulose acetate film with highly porous surface to maximize deposition of anthocyanins, thus increasing their availability for interaction with spoilage-associated gases e.g. ammonia and anthocyanin compounds. IN202441037706-A[P]. 2024.

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