Natural actomyosin (NAM) of P tayenus exhibited higher turbidity and storage modulus (G') upon heating, compared to that of P. macracanthus, suggesting the higher protein aggregation and rigidity. At temperature above 35 degreesC, P. tayenus NAM had higher surface hydrophobicity and disulfide bond formation than P. macracanthus NAM. The a-helix content of NAM from both fish species decreased as the temperature increased, indicating changes in structural conformation during heating. NAM gel from P. tayenus rendered more three-dimensional network than that from P. macracanthus. These results indicated that P tayenus NAM possessed superior gelling characteristic to P. macracanthus NAM due to the higher aggregation of protein caused by both hydrophobic interaction and disulfide bond.
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Prince Songkla Univ, Dept Food Technol, Fac Agroind, Hat Yai 90112, Songkhla, ThailandPrince Songkla Univ, Dept Food Technol, Fac Agroind, Hat Yai 90112, Songkhla, Thailand
Thiansilakul, Yaowapa
Visessanguan, Wonnop
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Natl Sci & Technol Dev Agcy, Natl Ctr Genet Engn & Biotechnol, Klongluang 12120, Pathumthani, ThailandPrince Songkla Univ, Dept Food Technol, Fac Agroind, Hat Yai 90112, Songkhla, Thailand
Visessanguan, Wonnop
Roytrakul, Sittiruk
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Natl Sci & Technol Dev Agcy, Natl Ctr Genet Engn & Biotechnol, Klongluang 12120, Pathumthani, ThailandPrince Songkla Univ, Dept Food Technol, Fac Agroind, Hat Yai 90112, Songkhla, Thailand
Roytrakul, Sittiruk
Kishimura, Hideki
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Hokkaido Univ, Res Fac Fisheries Sci, Lab Marine Prod & Food Sci, Hakodate, Hokkaido 0418611, JapanPrince Songkla Univ, Dept Food Technol, Fac Agroind, Hat Yai 90112, Songkhla, Thailand
Kishimura, Hideki
Prodpran, Thummanoon
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Prince Songkla Univ, Dept Mat Prod Technol, Fac Agroind, Hat Yai 90112, Songkhla, ThailandPrince Songkla Univ, Dept Food Technol, Fac Agroind, Hat Yai 90112, Songkhla, Thailand
Prodpran, Thummanoon
Meesane, Jirut
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Prince Songkla Univ, Dept Mat Prod Technol, Fac Agroind, Hat Yai 90112, Songkhla, ThailandPrince Songkla Univ, Dept Food Technol, Fac Agroind, Hat Yai 90112, Songkhla, Thailand