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水果有了可食用“保鲜衣”
Ren Min Ri Bao· 2025-08-11 22:01
Core Viewpoint - A breakthrough edible coating developed by a research team led by Professor Yang Peng from Shaanxi Normal University can extend the shelf life of fresh fruits significantly, with a room temperature shelf life increase of up to five times and a preservation period of 10 days for cut fruits under refrigeration [1][4]. Group 1: Edible Coating Development - The edible fruit preservation coating is based on a material known as protein amyloid aggregates, inspired by the survival mechanisms of barnacles [2]. - The research team successfully created a new type of film material (ALP) by unlocking the disulfide bonds of proteins, resulting in a stronger and more biodegradable coating that adheres tightly to fruit surfaces [2][3]. Group 2: Composition and Effectiveness - The coating incorporates safe, edible amino acids, natural polysaccharides, and cellulose to enhance its preservation effectiveness, improving flexibility, adhesion, and reducing respiration and moisture loss [3]. - Comprehensive tests on 17 types of fruits showed that the ALP coating extended the shelf life by 2 to 5 times while preserving nutritional value, flavor, and texture [3]. Group 3: Environmental and Economic Benefits - Compared to traditional preservation methods that rely on extensive cold chains, the ALP coating offers significant advantages in energy savings and reduced carbon emissions [4]. - The estimated cost of using this preservation technology is approximately 0.65 yuan per kilogram of fruit, with potential for further cost reduction through large-scale production [4].
我国科学家研发出水果保鲜涂层,保鲜期普遍延长2至5倍 水果有了可食用“保鲜衣”
Ren Min Ri Bao· 2025-08-11 21:38
Core Viewpoint - A breakthrough in edible fruit preservation technology has been achieved by a research team led by Professor Yang Peng from Shaanxi Normal University, which can extend the shelf life of fresh fruits significantly, with a new coating that keeps strawberries fresh for up to 10 days at room temperature [1][2]. Group 1: Technology Overview - The edible fruit preservation coating is based on a material known as protein amyloid aggregates, inspired by the survival mechanisms of barnacles [2]. - The team developed a new type of film material called ALP (amyloid-like protein) that is more adhesive and biodegradable, enhancing the preservation capabilities of fruits [2][3]. Group 2: Composition and Effectiveness - The ALP coating incorporates safe, edible amino acids, natural polysaccharides, and cellulose, which improve flexibility, adhesion, and provide antibacterial properties [3]. - Testing on 17 types of fruits showed that the ALP coating can extend the shelf life of fruits by 2 to 5 times while preserving their nutritional value, flavor, and texture [3]. Group 3: Environmental and Economic Impact - The ALP coating technology offers significant advantages over traditional cold chain preservation methods, including energy savings and reduced carbon emissions [4]. - The estimated cost of using this preservation technology is approximately 0.65 yuan per kilogram of fruit, with potential for further cost reduction through large-scale production [4].
新型涂层把水果装进“智能保鲜舱”
Ke Ji Ri Bao· 2025-07-09 01:22
Core Insights - A new edible protein-based coating developed by a research team at Shaanxi Normal University significantly extends the shelf life of fruits, reducing food waste and supply chain losses [1][5][6] Group 1: Coating Development - The coating, named ALP, can extend the shelf life of whole fruits at room temperature by 2 to 5 times, and fresh-cut fruits can last up to 10 days under refrigeration [1][5] - The coating is made from a synthetic protein amyloid aggregate that adheres strongly to fruit surfaces, blocking oxygen and slowing down the fruit's metabolism while retaining moisture [3][4] Group 2: Performance and Testing - Comprehensive tests on 17 types of common fruits showed that the ALP coating significantly improves preservation, with strawberries lasting 10 days at 23°C compared to just 2 days without the coating [5][6] - Even under high temperatures, the ALP coating maintains its effectiveness, extending the shelf life of mangoes and strawberries by several days [6] Group 3: Environmental and Economic Impact - The ALP coating is made from entirely natural and edible materials, ensuring safety for human consumption and environmental sustainability [6] - The cost of preserving fruits with the ALP coating is estimated at only 0.65 yuan per kilogram, with potential for further cost reductions as production scales up [6]