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1.
Int J Biol Macromol ; 262(Pt 1): 130008, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38331073

ABSTRACT

Crustaceans and mollusks are widely consumed around the world due to their delicacy and nutritious value. During the processing, only 30-40 % of these shellfish are considered edible, while 70-60 % of portions are thrown away as waste or byproduct. These byproducts harbor valuable constituents, notably chitin. This chitin can be extracted from shellfish byproducts through chemical, microbial, enzymatic, and green technologies. However, chitin is insoluble in water and most of the organic solvents, hampering its wide application. Hence, chitin is de-acetylated into chitosan, which possesses various functional applications. Recently, nanotechnology has proven to improve the surface area and numerous functional properties of metals and molecules. Further, the nanotechnology principle can be extended to nanochitosan formation. Therefore, this review article centers on crustaceans and mollusks byproduct utilization for chitosan, its nano-formation, and their food industry applications. The extensive discussion has been focused on nanochitosan formation, characterization, and active site modification. Lastly, nanochitosan applications in various food industries, including biodegradable food packaging, fat replacer, bioactive compound carrier, and antimicrobial agent have been reported.


Subject(s)
Chitosan , Animals , Chitosan/chemistry , Chitin/chemistry , Crustacea/chemistry , Mollusca , Food Industry
2.
J Food Sci Technol ; 56(5): 2758-2763, 2019 May.
Article in English | MEDLINE | ID: mdl-31168157

ABSTRACT

The use of cereal microgreens is increasing because of increased consumer's interest in healthier products. Chlorophyll (Chl) and Carotenoids (Car) are suggested to correlate with health promoting components like phenolics and antioxidant potential of the plant-part. They also play role against clinical conditions like thalassemia and hemolytic anemia and reduce the risk of some chronic diseases, such as cancer, cardiovascular diseases, skin diseases and age-related eye diseases. This study was carried out for the comprehensive profiling of Chl and Car in wheat (Triticum aestivum L.), and barley (Hordeum vulgare L.) micro-greens between 7 and 16 days on dry basis. Chl and Car content strongly correlated with the number of days of growth. Significantly high correlations existed among Chl a, Chl b, total Chl and total Car with concomitant Chl a/b and Chl/Car ratios. The peaks for the rate of accumulation of pigments were between 7-10 days on wheat and 10-13 days on barley. The maximum content of Chl and Car were 616.63 ± 18.45 mg/100 g DM and 54.80 ± 1.72 mg/100 g DM on day 16 and statistically not significant to variety of grain. The Chl level was slightly lower than Chl rich vegetables like kale and comparable to spinach and Car level was comparable to carrots, which is higher than most of the daily consumable fruits and vegetables. Further cell-based or in vivo studies of cereal microgreens could be considered to draw more valuable information related to human health.

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