"Single Cell Protein (SCP) Production and extraction and using it in Manufacturing of labneh and spread cheese "


Abstract in English

The Ultrafiltration (UF) technology was conducted on samples of akawe cheese whey to obtain the non-protein and fat whey (permeate) that rich in lactose and was concentrated by evaporation and carefully prepared after fortification by nutrients, (0.2) gr/100ml (NH4)2Hpo4 and (0.2) gr/100ml MgSo4, and (0.3) gr/100ml (NH4)2SO4, and prepared as a fermentation medium for yeasts capable of metabolizing sugar, and after that (15) samples were chosen and chemically analyzed along with the whey. Pure isolated Kluyveromyces lactis (42-K) yeast, recognized by ß- galagtosidase enzyme and its important application in food, medicine and pharmacy, was proliferating on the fermentation medium. The optimal conditions were determined to obtain single cell protein (SCP). The results referred that typical conditions of yeast growth were (6.5)% lactose concentration, pH (5), temperature (30°c), Fermentation time (24) hour, and the optimal speed of incubator shaker (350) rpm and the typical average of aerator (8%). The optimal values were applied in the bio fermentor (electrolab) to obtain biomass which was heated at (75-90 c°) for the extraction of the Single Cell Protein (SCP). The chemical analysis was conducted on (15) samples of single cell protein (SCP), and the results were in accordance with all the Syrian special specification, and (FOA) specification. The microbial estimated results met (FOA) specification, and the product was free from toxicity elements and cancered factors, which proved that the product was with high quality of proteins. The single cell protein (SCP) was added to Labneh, that manufactured by direct method, and to the proceed speared cheese between (1-10%), alternately with dried skimmed milk. The chemical and microbial analysis of Labneh met all the Syrian special specification and international codex. The result of sensory evaluation referred that percentage of single cell protein (SCP) must not exceed (4%) in the Labneh. The chemical and microbial analysis of proceed speared cheese met all the Syrian special specification and international codex. The result of sensory evaluation referred that the percentage of single cell protein (SCP) must not exceed (3%) in the proceed speared cheese. The results of a simplified feasibility study on the Labneh supported by single cell protein (SCP) (4%), and proceed speared cheese supported by single cell protein (SCP) (3%), referred to good gaining both of the products.

References used

Abdljabbar, Ahmed.H, R. Shahazad, J. Raouf ,S .Alhelu. 2008. petroleum single cell protein production,engineering and technology .Journal.27.(3):126-143. Abou – Donia S.A. 2004. Recent Developments in Zabady and Egyptian Labneh Research, A review. Egyptian of Dairy Science., 32 : 1-15. Abou – Donia, S.A., Attia, I.A., Khattab, A.A. and El – Khadragy, S.M (1992a) Characteristics of Labneh manufactured using different lactic starter cultures Egyptian J. Food Sci. 20 : 1. Abou-Donia,S.A.1991 Manufacture of Egyptian , Soft,Pickled cheeses , in Feta cheese and Related cheeses (eds R.K Robinson and A.Y. Tamime), Ellis Horwood,London. P. 126-138.

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