Physicochemical and Functional Characterization of Cocosin, the Coconut 11S Globulin

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概要

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• The physicochemical and functional characteristics of the major coconut storage protein, 11S globulin or cocosin, were investigated.Cocosin was purified by a combination of salt extraction, selective precipitation, and gel filtration chromatography. The solubility of cocosin at different pH was higher at µ=0.5 than at µ=0.08. The 24 and 21 kDa basic polypeptides of cocosin were more resistant to chymotrypsin digestion than the 35 and 32 kDa acidic polypeptides. Cocosin emulsions were most stable at 0 M NaCl, followed by emulsions in 0.1 M and 0.4 M NaCl. The available SH groups were found to be 21.6 mole SH/mole cocosin. Cocosin was observed to be stable under various pasteurization conditions from 63°C, 30 min to 100°C, 10 sec. However, heating at 100°C for 10 min and longer degraded cocosin up to 60%. The thermal denaturation midpoint temperature, Tm, of the trimeric cocosin was 77.6°C while that of the hexameric form was 100.5°C.

• 2010-05-01

著者

• Utsumi Shigeru

  Laboratory Of Food Quality Design And Development Division Of Agronomy And Horticultural Science Gra

• PRAK Krisna

  Laboratory of Food Quality Design and Development, Graduate School of Agriculture, Kyoto University

• Tecson‐mendoza Evelyn

  Institute Of Plant Breeding Crop Science Cluster College Of Agriculture University Of The Philippine

• ANGELIA Mark

  Institute of Plant Breeding, Crop Science Cluster, College of Agriculture, University of the Philipp

• GARCIA Roberta

  Institute of Plant Breeding, Crop Science Cluster, College of Agriculture, University of the Philipp

• CALDO Kristian

  Institute of Plant Breeding, Crop Science Cluster, College of Agriculture, University of the Philipp

• TECSON-MENDOZA Evelyn

  Institute of Plant Breeding, Crop Science Cluster, College of Agriculture, University of the Philipp

• Angelia Mark

  Institute Of Plant Breeding Crop Science Cluster College Of Agriculture University Of The Philippine

• Garcia Roberta

  Institute Of Plant Breeding Crop Science Cluster College Of Agriculture University Of The Philippine

• Caldo Kristian

  Institute Of Plant Breeding Crop Science Cluster College Of Agriculture University Of The Philippine

• Prak Krisna

  Laboratory Of Food Quality Design And Development Division Of Agronomy And Horticultural Science Gra

• Tecson-mendoza Evelyn

  Institute Of Plant Breeding Crop Science Cluster College Of Agriculture University Of The Philippine

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