title: Utilisation of Chlorella vulgaris cell biomass for the production of enzymatic protein hydrolysates.
abstract: Studies on enzymatic hydrolysis of cell proteins in green microalgae Chlorella vulgaris 87/1 are described. Different proteases can be used for production of hydrolysates from ethanol extracted algae. The influence of reaction parameters on hydrolysis of extracted biomass with pancreatin was considered, and the composition of hydrolysates (Cv-PH) was investigated in relation to the starting materials. Significant changes in the degree of hydrolysis were observed only during the first 2h and it remained constant throughout the process. An enzyme-substrate ratio of 30-45 units/g algae, an algae concentration of 10-15% and pH values of 7.5-8.0 could be recommended. Differences in the chromatographic patterns of Cv-PH and a hot-extract from Chlorella biomass were observed. Adequate amounts of essential amino acids (44.7%) in relation to the reference pattern of FAO for human nutrition were found, except for sulfur amino acids. Cv-PH could be considered as a potential ingredient in the food industry.
authors: Center for Studies on Industrial Biotechnology (CEBI), University of Oriente, Avenida Patricio Lumumba s/n, Santiago de Cuba 5, CP 90 500, Cuba. hmorris@cebi.uo.edu.cu
authors: Humberto J
authors: HJ
authors: Morris
authors: Angel
authors: A
authors: Almarales
authors: Olimpia
authors: O
authors: Carrillo
authors: Rosa C
authors: RC
authors: Bermúdez
mesh_terms: D000601:Amino Acids, Essential / Q000032:analysis; D018533:Biomass; D019149:Bioreactors; D048408:Chlorella vulgaris / Q000378:metabolism*; D005069:Evaluation Studies as Topic; D006801:Humans; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D009753:Nutritive Value; D011492:Protein Hydrolysates / Q000096:biosynthesis* / Q000737:chemistry; D012015:Reference Standards; D013997:Time Factors; D014480:United Nations
chemical_list: D000601:Amino Acids, Essential; D011492:Protein Hydrolysates