Variation in the Nutritional Composition of Soft and Hard Blue Swimming Crabs (<i>Portunus pelagicus</i>) Having Good Export Potential

Pathak, N. N.; Shakila, R. Jeya; Jeyasekaran, G.; Padmavathy, P.; Neethiselvan, N.; Shalini, R.; Arisekar, Ulaganathan; Patel, Akalesh; Kumar, U.; Malini, A; Mayilvahnan, R.

doi:10.1080/10498850.2021.1936324

Cited by 9 publications

(7 citation statements)

References 32 publications

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“…Unlike the study in which the lipid content was reported to be ~17 wt.% [53], the lipid content of the crab shells in the present study was determined to be 3 wt.%. The measured lipid content of the shells in the present study was, however, consistent with the 3.17 wt.% lipid content reported in another study [56], suggesting that significant variations in the composition of shells may occur depending on several factors, such as crab species, presence of residual crab meat on the shell, crab source, etc.…”

Section: Characterization Of Samplesupporting

confidence: 92%

Technoeconomic Assessment of Biopolymer Production from Crustacean Waste with the UK as a Case Study

et al. 2023

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Marine pollution has increased in recent decades, largely due to the proliferation of seafood processing plants and the improper disposal of their associated waste streams. The waste streams consist mainly of shells that are composed of chitin, which is the most abundant aminopolysaccharide biopolymer in nature. Recognizing the value of chitin, the potential for the valorization of crustacean waste for chitin production was explored. In this regard, biogenic crab waste was subjected to chemical-only, enzymatic–chemical, and microbial treatments for chitin production. The results were employed as inputs for process simulation as a precursor to undertaking performance assessments. This study subsequently showed that the net present values (NPVs) of the chemical-only, enzyme–chemical, and microbial chitin production pathways were GBP 118.63 million, GBP 115.67 million, and GBP 132.34 million, respectively, indicating that the microbial chitin production pathway constituted the most appropriate technology for future investment. Employing a cost–benefit (CB) analysis, the CB ratios for the chemical-only, enzymatic–chemical, and microbial approaches were determined to be 7.31, 0.45, and 0.23, respectively. These results reinforced the dominant status of the microbial approach for chitin production from crab waste as the preferred valorization strategy. This study was able to provide information regarding the implications of executing alternative scenarios for crustacean waste.

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Section: Characterization Of Samplesupporting

confidence: 92%

Technoeconomic Assessment of Biopolymer Production from Crustacean Waste with the UK as a Case Study

et al. 2023

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“…Histological [47], indicating the changes that occurred during molting. It is evidenced that the acid-soluble stroma protein in soft-shell blue swimming crab meat was much lower (1.85%) as compared to hard-shell crab (5.45%) [48]. Therefore, the decrease or increase observed in the stiffness (i.e., deformity) of the pasteurized crab meat processed with the addition of soft-shell crab meat is mainly due to the differences in the collagen content in the muscle tissue, i.e., the postmolt or intermolt stages.…”

Section: Texture Parameters Of Pasteurized Soft-and Hard-shellmentioning

confidence: 96%

Standardization of Pasteurization Process for Soft- and Hard-Shell Blue Swimming Crab (Portunus pelagicus)

Pathak

Shakila

Jeyasekaran

et al. 2023

Journal of Food Processing and Preservation

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Pasteurized hard-shell blue swimming crabs (Portunus pelagicus) are widely popular in the United States, while soft-shell crabs are rich in minerals and are often discarded as waste or sold at a substantially low price in the market. Pasteurization time-temperature is standardized for soft-shell crabs processed together with hard-shell crabs. This study was undertaken to develop a pasteurization process for soft-shell crabs together with hard-shell crabs. Precooking time and temperature evaluated for soft-shell crabs based on sensorial analysis yield and drip loss indicated that the heat process at 100°C for 5 min gave higher yield (82%) and lower drip loss (14%). Soft-shell crabs were processed together with hard-shell crabs at three different ratios, viz., 30 : 70, 40 : 60, and 50 : 50. The pasteurization process was employed at seven time-temperature combinations, viz., 83-84°C for 150 min and 160 min, 84-85°C for 140 and 150 min, 85-86°C for 130 min and 140 min, and 86-87°C for 120 min. Crabs processed at a 30 : 70 ratio had a higher sensory score (4.95), and pasteurization at 83-84°C for 150 yielded the best quality product. The total process time ( F value) determined by the heat penetration study was 58.25 min. Shelf-life stability studies revealed that TVB-N values were higher in those processed at a 50 : 50 ratio and process temperatures greater than 83-84°C but never exceeded in those processed at a 30 : 70 ratio, the permissible limit. Total aerobic bacteria remained low for 1 to 2 log cfu/g correlating well with sensory analysis. Soft-shell crabs can therefore be processed together with hard-shell crabs at a ratio of 30 : 70 and pasteurized at 83-84°C for 150 min with a shelf-fish of 6 months at 2°C without any loss in quality. The standardized process will enable crab processors to use soft-shell crab meat in addition to hard-shell crab meat, which is currently discarded.

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“…The term "soft-shell crabs" does not refer to a particular species of crab, but refers to the crab that has a newly moulted, decalcified, and soft exoskeleton [4]. It has been reported that many crab species can be cultivated for soft-shell crabs, including Callinectes ornatus [5], Chionoecetes opilio [6], Portunus pelagicus [7], Portunus sanguinolentus [8], Scylla olivacea [9], and Scylla paramamosain [10]. These soft-shell crabs have widely attracted consumers' and researchers' attention due to their high economic value, enriched nutrition, and unique mode of production [7,11].…”

Section: Introductionmentioning

confidence: 99%

“…However, the total contribution of minerals was lower in soft-shell crabs when compared to the hard-shell crabs [8]. Pathak et al investigated the biochemical composition of soft-and hard-shell blue swimming crabs (Portunus pelagicus) and demonstrated that soft-shell crabs were rich in minerals, whereas hard-shell crabs contained more proteins, amino acids, and fatty acids [7]. Additionally, there were obvious differences in nutrient amounts between male and female crabs [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Feasibility of Harvest Optimisation of Soft-Shell Mud Crab (Scylla paramamosain) from the Perspective of Nutritional Values

Gao

Yang

Huang

et al. 2023

Foods

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Soft-shell crabs have attracted consumers’ attention due to their unique taste and nutritional value. To evaluate the feasibility of harvest optimisation of soft-shell mud crabs, the proximate composition, mineral composition, and total carotenoid, amino acid, and fatty acid contents of edible parts of male and female soft-shell mud crabs at different moulting stages were determined and compared from a nutritional value perspective. The results showed that the sex and moulting stages could significantly affect the nutritional values of the edible portions of soft-shell crabs. The female or male soft-shell crabs in the postmoult Ⅰ stage had a much richer mineral element content than that in other moulting stages. The total carotenoid content in female soft-shell crabs was significantly higher than that in male crabs in all moulting stages, while male soft-shell crabs had better performance in amino acid nutrition than female soft-shell crabs. Moreover, it was found that soft-shell crabs in the postmoult Ⅱ stage had significantly higher contents of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), while significantly lower contents of saturated fatty acids (SFA) than those in other stages. The present study will provide a reference basis for the diversified cultivation of soft-shell crabs, and further promote the development of the mud crab industry.

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Variation in the Nutritional Composition of Soft and Hard Blue Swimming Crabs (Portunus pelagicus) Having Good Export Potential

Cited by 9 publications

References 32 publications

Technoeconomic Assessment of Biopolymer Production from Crustacean Waste with the UK as a Case Study

Technoeconomic Assessment of Biopolymer Production from Crustacean Waste with the UK as a Case Study

Standardization of Pasteurization Process for Soft- and Hard-Shell Blue Swimming Crab (Portunus pelagicus)

Evaluation of the Feasibility of Harvest Optimisation of Soft-Shell Mud Crab (Scylla paramamosain) from the Perspective of Nutritional Values

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