Gelatin and Chitosan as Meat By-Products and Their Recent Applications

Abstract

Meat by-products such as bones, skin, horns, hooves, feet, skull, etc., are produced from slaughtered mammals. Innovative solutions are very important to achieving sustainability and obtaining the added value of meat by-products with the least impact on the environment. Gelatin, which is obtained from products high in collagen, such as dried skin and bones, is used in food processing, and pharmaceuticals. Chitosan is derived from chitin and is well recognized as an edible polymer. It is a natural product that is non-toxic and environmentally friendly. Recently, chitosan has attracted researchers’ interests due to its biological activities, including antimicrobial, antitumor, and antioxidant properties. In this review, article, we highlighted the recent available information on the application of gelatin and chitosan as antioxidants, antimicrobials, food edible coating, enzyme immobilization, biologically active compound encapsulation, water treatment, and cancer diagnosis.

Innovative Packaging Strategies for Freshness and Safety of Food Products: A Review

“…Hence, the evolved oxygen or the atmosphere oxygen within the food packaging environment must be scavenged to maintain freshness, thereby delaying spoilage. Therefore, oxygen scavengers are one of the most employed techniques to maintain the freshness of the food product, thus arresting the oxygen within the food package [103]. The ultimate action of an oxygen scavenger is to prevent oxidation and slow down the metabolism of food [104].…”

Chitosanase Production from the Liquid Fermentation of Squid Pens Waste by Paenibacillus elgii

“…Chitosan is a polysaccharide comprising glucosamine and N-acetylglucosamine units linked together by β-1,4-glycosidic bonds [ 1 ]. This versatile compound is a promising non-toxic polymer with remarkable properties such as biocompatibility, antibacterial activity, biodegradability, film-forming ability, and others [ 2 ], making it useful for a wide range of applications, including food [ 3 ], cosmetics [ 4 ], biomedicine [ 5 ], agriculture [ 6 ], and environmental protection [ 7 ]. However, due to its poor solubility at neutral pH values, chitosan has limited usage in the food and medicine industry [ 8 ].…”