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Extraction, optimization, and functional quality evaluation of carotenoproteins from shrimp processing side streams
Bandela Dayakar1, Martin Xavier2, Soibam Ngasotter1
1ICAR-Central Institute of Fisheries Education, Versova, Mumbai, 400061, Maharashtra, India.
Environmental Science and Pollution Research International
|October 13, 2023
Summary
This study developed an eco-friendly enzymatic process to extract valuable carotenoproteins from shrimp waste. The resulting carotenoprotein isolates (CpSS and CpSH) exhibit promising nutritional and functional properties for food and feed applications.
Area of Science:
- Biotechnology
- Food Science
- Waste Management
Background:
- Shrimp waste is a significant byproduct of the seafood industry, posing disposal challenges.
- Carotenoproteins, valuable compounds found in shrimp exoskeletons, are often lost in waste streams.
- Developing sustainable methods for extracting and utilizing these compounds is crucial for resource valorization.
Purpose of the Study:
- To establish an effective and eco-friendly enzymatic process for extracting carotenoproteins from shrimp head waste (SHW) and shrimp shell waste (SSW).
- To optimize enzymatic hydrolysis conditions to maximize the degree of deproteinization (DDP) for both SHW and SSW.
- To characterize the nutritional, color, and functional properties of the extracted carotenoproteins (CpSH and CpSS).
Main Methods:
- Utilized Box-Behnken design of response surface methodology (RSM) to optimize enzymatic hydrolysis parameters (temperature, pH, time, enzyme/substrate ratio).
- Separately optimized conditions for SHW and SSW to achieve maximum DDP.
- Applied spray drying to the carotenoprotein effluent and assessed physicochemical and functional properties.
Main Results:
- Optimal hydrolysis conditions were determined, yielding high DDP (92.32% for SSW, 96.72% for SHW).
- Carotenoprotein from shrimp shell (CpSS) showed a higher essential amino acid score and whiteness index (82.05) compared to carotenoprotein from shrimp head (CpSH) (64.04).
- Both CpSS and CpSH demonstrated excellent functional properties, including high solubility, emulsion, and foaming capacities and stability, particularly at a 3% concentration.
Conclusions:
- The enzymatic extraction process is effective for obtaining carotenoproteins from shrimp waste.
- CpSS and CpSH possess favorable nutritional and functional attributes, indicating their potential as valuable ingredients.
- CpSS is suitable for human food products due to its superior amino acid profile and color, while CpSH can be utilized in animal feed formulations.
