Monthly variation of biochemical composition of Pacific oysters Crassostrea gigas from two main cultivation areas in Japan

Futagawa, Kazuyuki; Yoshie-Stark, Yumiko; Ogushi, Mariko

doi:10.1007/s12562-011-0364-5

Cited by 16 publications

(15 citation statements)

References 18 publications

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“…Lipid content represents the main energy reserves for gametogenesis in bivalves (Kang et al , 2000; Dridi et al , 2007; Pogoda et al , 2013), and variation in this trait is closely related to gamete development, with the maximum lipid content corresponding to maximum ripeness and the lowest lipid value corresponding to the spawning period (Liu et al , 2008). The total lipid content obtained in this study was higher in oysters in May and June, with values comparable or greater than those found in Japanese areas (Futagawa et al , 2011).…”

Section: Discussionsupporting

confidence: 83%

“…In contrast, CI E values highlighted the economic quality of oysters reared in the Varano Lagoon. Indeed, the values obtained in both sites during the observation period varied between 0.35–0.46 except for FO in June (0.05), and this range is comparable to that obtained in other areas that have been recognized as suitable for oyster production with an economically reasonable size for harvesting (Linehan et al , 1999; Oliveira et al , 2006; Futagawa et al , 2011).…”

Section: Discussionsupporting

confidence: 79%

“…This result confirms that the FO site may be characterized by environmental stress conditions. A comparison with other studies highlights that oysters reared in Alaska (84–155, Oliveira et al , 2006) and Japan (132–169, Futagawa et al , 2011) are fuller than those reared in Varano (33–87, this study). Based on CI CG values, the oysters reared in the Varano Lagoon are apparently not well filled with meat.…”

Section: Discussionsupporting

confidence: 63%

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Quality aspects of Crassostrea gigas (Thunberg, 1793) reared in the Varano Lagoon (southern Italy) in relation to marketability

et al. 2017

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Shellfish culture, based on ecological and market assessment, is considered a driving force for socio-economic change in ecologically complex coastal systems such as lagoons throughout the Mediterranean area. To diversify fish production, the Pacific oyster Crassostrea gigas was cultured at commercial farms in the Varano Lagoon (SE Italy). The aims of this study were to evaluate through four condition indices (CI, CICG, CIE and AFNOR index), the Polydora index (PI), lipid content, quality and market aspects of oysters reared at two different sites (FO and LA) of the Varano Lagoon, which are characterized by different hydrodynamic conditions. The results of this study highlighted the potential economic benefits associated with sustainable aquaculture development in the Varano Lagoon, proving that the area surrounding the LA site was more suitable for oyster culture, reaching commercial size (60 mm) in a shorter time (6–8 months). Higher growth performance of oysters was observed in the spring, when the nutrient availability positively affected the feeding response of suspension feeders. The opposite was found in winter and in summer, when the decrease in growth could be due to the reduction of nutrient and to the increase of salinity, TSM and ISM. The presence of the mud blister worm (Polydora sp.) during rearing could be a real problem, as it damages oyster market value and threatens serious financial loss to the local farmers.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 79%

Section: Discussionsupporting

confidence: 63%

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Quality aspects of Crassostrea gigas (Thunberg, 1793) reared in the Varano Lagoon (southern Italy) in relation to marketability

et al. 2017

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“…From FAA analysis, taurine comprised more than half FAAs, with other major FAAs including glutamate, glycine, alanine and proline. Regional differences were observed in their content, which concurs with finding of Futagawa, Yoshie‐Stark and Ogushi () in their study of C. gigas grown in Japan. However, the latter study only found small differences in FAA profiles related to season.…”

Section: Discussionsupporting

confidence: 90%

Understanding the impact of growing conditions on oysters: a study of their sensory and biochemical characteristics

et al. 2013

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Crassostrea gigas, the most common oyster species grown around the world, adapts to different climates, water qualities and growing technique. Its composition is known to vary according to these factors but what about its sensory properties? The objective of this study was to develop a method that would measure objectively oysters' sensory properties and demonstrate that descriptive sensory analysis can be applied to establish relationships between sensory and biochemical measurements, with a view to understanding the impact of changes in growing conditions and techniques on sensory properties. Oysters were sampled from three oyster growing areas. They were presented to a panel of assessors trained specifically to evaluate their appearance, aroma, flavour and aftertaste characteristics following an objective protocol. Proximate composition and content of fatty acids and free amino acids were measured in replicate oysters from the same batches. The panel developed a vocabulary of 12 terms that all measured significant differences between the oysters. Significant differences were also found in the composition of oysters. Relationships between compositional measurement and sensory perception were established that reflect the impact of some growing factors. Insights gained from this study could assist the oyster industry to achieve optimized growing techniques and marketing strategies.

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“…Based on the present study, Ca content of the flesh was higher in Kumamoto oysters than in Portuguese oysters. It was also higher than in strains of Pacific oysters of different shell color (3940-5,160 mg/kg dry weight; Zhu et al, 2018) or those form two Japanese cultivation areas (2600-7,330 mg/kg dry weight; Futagawa et al, 2011). Mg content did not differ significantly between the two species measured in the present study [2759-2,870 mg/kg dry weight (425-433 mg/kg wet weight, content was converted to base on wet weight according to moisture content)].…”

Section: A B Cmentioning

confidence: 82%

Molecular Basis of Taste and Micronutrient Content in Kumamoto Oysters (Crassostrea Sikamea) and Portuguese Oysters (Crassostrea Angulata) From Xiangshan Bay

Liu

Jian

et al. 2021

Front. Physiol.

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Oysters are the most extensively cultivated bivalves globally. Kumamoto oysters, which are sympatric with Portuguese oysters in Xiangshan bay, China, are regarded as particularly tasty. However, the molecular basis of their characteristic taste has not been identified yet. In the present study, the taste and micronutrient content of the two oyster species were compared. Portuguese oysters were larger and had a greater proportion of proteins (48.2 ± 1.6%), but Kumamoto oysters contained significantly more glycogen (21.8 ± 2.1%; p < 0.05). Moisture and lipid content did not differ significantly between the two species (p > 0.05). Kumamoto oysters contained more Ca, Cu, and Zn (p < 0.05); whereas Mg and Fe levels were comparable (p > 0.05). Similarly, there was no significant difference between the two species with respect to total amount of free amino acids, umami and bitterness amino acids, succinic acid (SA), and most flavoring nucleotides (p > 0.05). In contrast, sweetness amino acids were significantly more abundant in Portuguese oysters. Volatile organic compounds profiles of the two species revealed a higher proportion of most aldehydes including (2E,4E)-hepta-2,4-dienal in Kumamoto oysters. Overall, Kumamoto oysters contain abundant glycogen, Ca, Zn, and Cu, as well as volatile organic compounds, especially aldehydes, which may contribute to their special taste. However, free amino acid and flavor nucleotides may not the source of special taste of Kumamoto oyster. These results provide the molecular basis for understanding the characteristic taste of Kumamoto oysters and for utilizing local oyster germplasm resources.

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Monthly variation of biochemical composition of Pacific oysters Crassostrea gigas from two main cultivation areas in Japan

Cited by 16 publications

References 18 publications

Quality aspects of Crassostrea gigas (Thunberg, 1793) reared in the Varano Lagoon (southern Italy) in relation to marketability

Quality aspects of Crassostrea gigas (Thunberg, 1793) reared in the Varano Lagoon (southern Italy) in relation to marketability

Understanding the impact of growing conditions on oysters: a study of their sensory and biochemical characteristics

Molecular Basis of Taste and Micronutrient Content in Kumamoto Oysters (Crassostrea Sikamea) and Portuguese Oysters (Crassostrea Angulata) From Xiangshan Bay

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