Carrageenan-based edible biodegradable food packaging: A review
K Mugdha Bhat, Jyothsana R, Ashwani Sharma, Nagashree N Rao
As traditional food packaging materials show shortcomings in terms of their environmental pollution impact and in their manufacturing requirements for non-renewable resources, the need for alternative packaging materials and packaging formats is now required more than ever.In the packaging industry, various approaches are being studied to look for bio-based polymers which could potentially replace the plastics due to the rising demands of food being safe and free from synthetic preservatives and non-toxic. Biodegradable, plant based, ecofriendly and sustainable approach is the need of an hour. Carrageenan is a well-known polysaccharide extracted from seaweeds of the Rhodophyceae family. This review explicates the chemical structure and properties of Carrageenan. The Carrageenan films produced are hard, flexible and soft, meeting the industrial requirements. The seaweed based biopolymer which is also a renewable resource and is commercially available at low cost has a potential significance due to its worthy barrier and mechanical properties. This review not only focuses on the prospect and future of edible biodegradable packaging; various physical and chemical properties, the uptake and degradation profile, and the effect of carrageenan on humans but also explores the various carrageenan production methods. This review throws light on the various applications and future prospects of carrageenan and carrageenan-based products.