Evaluation of the technology of Spirulina culture of the Global Environmental Organization Farm (GEO-Farm) in Mangayao, Bayambang, Pangasinan

Date

10-1993

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Macrina T. Zafaralla

Abstract

Spirulina culture of the Geo-farm was evaluated for its crude protein content, algal contaminants and other microorganisms present. The crude protein of dried samples of Spirulina culture collected between January 24 - May 20, 1993 ranged from 29 - 48%. This was lower than the crude protein of commercial Spirulina powder (49.76%). from the USA. Crude protein content of the fresh sample and fish pond supplies produced by the Geo-farm was 1.8% and 11.2%, respectively. The other named organisms enduring in the Spirulina culture were Eucapsis. Chroococcus, and the diatom Navicula. Eucapsis had the highest numerical percentage of 13% throughout the sampling period. Bacteria ( 6.3 x 105 CFU/gram), molds (5.5 x 103 CFU/gram). yeasts (4.4 x 103 CFU/gram) and conforms (43 CFU/gram) were present in sundried sample. No E. colt was detected. Physicochemical characteristics of the Spirulina culture medium such as water temperature, dissolved oxygen, pH, salinity, electrical conductivity, alkalinity, hardness, ortho phosphate, nitrate and chloride were also investigated. Correlation analysis involving the following did not show any significant relationship: ortho-P vs. dissolved oxygen, temperature. salinity, electrical conductivity, hardness, alkalinity and chloride; electrical conductivity vs. hardness, alkalinity and ortho-P; hardness vs. ortho-P and nitrate; and alkalinity vs. nitrate and ortho-P. The results suggested that the Spirulina culture should be further maintained and monitored in terms of its purity.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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