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@#Aims: Researchers found a wide range of therapeutic properties in Spirulina sp. including as anti-cholesterol or anti-hyperlipidemic agent. In this study, the lipid levels of domestic F. catuswere induced in order to scrutinize the anti-hyperlipidemic effects of local S. platensisLUQS1 strain, specifically at concentrations of 0.5g/day and 1.0 g/day.Methodology and results:Elevation of serum lipid levels viz. total cholesterol (TC), high density lipoprotein (HDL), low density lipoprotein (LDL) and triglycerides (TG) as well as the status of kidney [creatinine (Cr) and blood ureanitrogen (BUN)] were observed in four groups of F. catusfor 45 days. The highest levels for TC, LDL and TG (P<0.05) were recorded in high cholesterol diet group (CD) at day 45 with 291.67±2.87 mg·dL-1, 111.60±9.73 mg·dL-1and 146.33±10.44 mg·dL-1, respectively. HDL levels in Spirulina-treated groups (CA and CAA) were better than normolipidemic group (control, SD group), of which the maximum levels were displayed at day 30 specifically 72.87±6.08 mg·dL-1by cats-fed with high cholesterol diet treated with 0.5 g/day S. platensis LUQS1 (CA group). There were insignificant differences (P>0.05) in the BUN levels; however, the Cr levels in CAA group (day 30 and 45) were slightly out of normal range but did not classify under chronic condition. Conclusion, significance and impact of the study: Alternative treatments on hyperlipidemic cats were rarely reported by researchers and medicinal practitioners. Thus, the findings of this present study provided a genuine knowledge concerning the lipid-lowering effect of S.platensisLUQS1 on the hyperlipidem
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ABSTRACT The aim of this study was to analyze the influence of solid waste on the cultivation of the microalgae Spirulina sp. LEB 18 and Chlorella fusca LEB 111 with 0, 40, 80 and 120 ppm of mineral coal ash. The addition of the ash did not inhibit the cultivation of microalgae at the tested concentrations, showing that it could be used for the cultivation of these microalgae due to the minerals present in the ash, which might substitute the nutrients needed for their growth.
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Growth patterns of trichome and contaminative bacteria in Spirulina sp. liquid culture were observed, and it was found that the number of neutral and alkalophilic bacteria was always 105～106 times of that of Spirulina sp. trichome. It would be very difficult to get real pure Spirulina sp. strain by classical methods of dilution plate, capillary and single trichome selecting methods. A great deal of contaminative bacteria was washed out by two pretreatment processes. Low speed centrifugation was designed to wash the strains which usually deposit at bottom, and filtration method was designed to treat the strains usually floating at surface. Sandwich plate and dilution plate were designed for the purification of the mobile strains and non-mobile strains, respectively. A lot of strains were purified by the above processes and pure single trichome formed pure colonies on plates.