Browsing by Author "Mehra, R."

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    Carrageenan based hydrogels and composites: A systematic investigation reporting their multidimentional essence
    (Nova Science Publishers, Inc., 2016) Ul Rehman, W.; Majeed, A.; Rani, P.; Saini, K.C.; Najar, R.A.; Mehra, R.; Singh, A.; Bast, Felix
    Carrageenans are red seaweed extracted sulfated linear polysaccharides which possess excellent gel forming properties. They are extensively used for their thickening, gel forming as well as stabilizing properties in food industries. Due to their good protein binding abilities, they are preferred in meat and dairy preservation. Structurally, they are polymers of alternately repeating disaccharide unit, ?-(133)-D-galactose and ?-(134)-3,6- anhydro-D- or L-galactose. Sulphation of the galactose gives them the distinguishing properties. Three isomeric forms of carrageenan with slightly different properties exist in nature. Their hydrogels are used in tissue engineering and controlled drug delivery while their composites find applications in wound dressings, protection of fish and meat from dehydration. In the field of medicine, carrageenans possess anticoagulant, antithrombotic, antiviral, and antitumor activities. Besides they also possess many industrial applications. ? 2016 Nova Science Publishers, Inc.
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    Gelatin: A comprehensive report covering its indispensable aspects
    (Nova Science Publishers, Inc., 2016) Ul Rehman, W.; Majeed, A.; Mehra, R.; Bhushan, S.; Rani, P.; Saini, K.C.; Bast, Felix
    Gelatin is a collagen derived product, obtained by incomplete hydrolysis of collagen procured from skin, bones and connective tissues of animals and exhibits flavourlessness, colourlessness and translucency. It is commonly utilised as a gelling agent and also as additive in food, drugs, cosmetics, paints, matches, photographic films and foam stabilizer. The overall amino acid composition and proportion of gelatin varies according to the source of raw material, however glycine, proline and hyrdoxyproline constitute almost 60% of the total amino acid residues while cysteine is absent. Besides being used in food industries, gelatin based composites and blends are used in pharmacy for manufacturing biocompatible gelatin scraps, tissue engineering films and controlled drug delivery systems. This chapter focuses on the physio-chemical properties of gelatin, its extraction, composites and blends. ? 2016 Nova Science Publishers, Inc.