Phytochemical screening and antioxidant activity of some medicinal plants' crude juices.

Leaves of fig, guava, olive and pomegranate and peels of ripe pomegranate fruits were mechanically pressed to obtain the crude juices. The resultant crude juices were subjected to the estimation of certain phytochemicals, i.e.

L-asparaginase: Immobilization, Antiviral and Antiproliferation Activities.

Background: L-asparaginase (L-AsnA) enzyme has gained significant attention in the food, biocatalysts and pharmaceutics industry. It (L-AsnA) has been widely used in food processing industries as a promising acrylamide mitigating agent and as a therapeutic agent in the treatment of certain human cancers.

Objective: Based on US Patent (4,433,054; 1984), L-asparaginase (L-AsnA) enzyme is immobilized by admixing the active enzyme on the polysaccharide to be in a gel form.

Antioxidant and antiviral activity of proteins hydrolyzed by three enzymes.

Purpose: To obtain protein hydrolysates from fresh water green algae by three different enzymes and evaluate its antioxidant and antiviral activity.

Methods: Enzymatic hydrolysates of green algae protein were prepared by treatment with: 1.2% solution of pepsin, trypsin or papain.

Optimization Growth of Spirulina (Arthrospira) Platensis in Photobioreactor Under Varied Nitrogen Concentration for Maximized Biomass, Carotenoids and Lipid Contents.

Aims And Background: Spirulina (Arthrospira) platensis (SP) microalgae were cultured in Zarrouk Medium (ZM), containing three nitrogen concentrations (N-limited, N-optimal and Nrich medium) in ten liter-photo-bioreactor (10 L PBR) for 15-days, in order to study changes in lipid compounds (total carotenoids and total lipids and their effect on fatty acid profile). Based on US patent, the yield of bioactive compounds (such as gamma-linolenic acid GLA, C18:3) extracted from microalgae biomass, mainly depends on the extraction processes (1). GLA has much attention with respect to its therapeutic properties such as its ability to decrease blood cholesterol levels.

Potential of Macroalgae Ulva lactuca as a Source Feedstock for Biodiesel Production.

Background: The aim of this study was to investigate the possibility of growing of algae Ulva lactuca L.under different salinity levels coupled with varied KNO3 concentrations (source of N) as a potential source of oil for biodiesel production.

Methods: U.

Optimization of Growth Conditions for Purification and Production of L-Asparaginase by Spirulina maxima.

L-asparaginase (L-AsnA) is widely distributed among microorganisms and has important applications in medicine and in food technology sectors. Therefore, the ability of the production, purification, and characterization of AsnA from Spirulina maxima (SM) were tested. SM cultures grown in Zarrouk medium containing different N2 (in NaNO3 form) concentrations (1.

Enhancement of Antioxidant Enzymes Activities, Drought Stress Tolerances and Quality of Potato Plants as Response to Algal Foliar Application.

Background: Different types of environmental stress may induce several physiological, biochemical and molecular responses in several crop plants. According to a patent study, several types of low antioxidant defense compounds and the activity of various antioxidant defense enzymes are induced in plants grown under various biotic and abiotic stress factors.

Methods: In this work, the responses of potatoes plant treated with algae extract to drought stress were examined by evaluating the crop yield of tuber, cellular biological compounds (total carbohydrates and proteins), mineral composition and enzyme and non-enzyme antioxidant systems and total oxidative compounds.

FUNCTIONAL CHARACTERS EVALUATION OF BISCUITS SUBLIMATED WITH PURE PHYCOCYANIN ISOLATED FROM SPIRULINA AND SPIRULINA BIOMASS.

The aim of the present work is to study the effect of incorporation of biomass and phycocyanin extracts of Spirulina platensis growing in define media at large scales (300 liters, limited in nitrogen and high salinity) to traditional butter biscuits in order to increase general mental health as functional products, FPs). The FP were manufactured at a pilot scale formulated by adding algal biomass (0.3, 0.

Enhancement of lipid accumulation in Scenedesmus obliquus by Optimizing CO2 and Fe3+ levels for biodiesel production.

The effects of cultivation of Scenedesmus obliquus in nutrient medium supplemented with 0.03%, 3, 9% and 12% CO(2) or 2.5-20 mg L(-1) of Fe(3+) on dry weight of biomass (DW), total lipid accumulation (TL contents) and total lipid productivity (TLP) were evaluated under indoor conditions.

Characterization and bioactivity of phycocyanin isolated from Spirulina maxima grown under salt stress.

In this study, Spirulina maxima (SM) has been selected following preliminary investigations, for cultivation in either normal (0.02 M) or stress (0.1 M) NaCl medium (Zarrouk) under room conditions to evaluate the possibility of increasing the total phycobiliprotein content (TPC) and their chemical constituents: C-phycocyanin (C-PC), allophycocyanin (APC) and phycoerthrin (PE).

WITHDRAWN: Enhancement of carotenoids in Dunaliella salina for use as dietary supplements and in the preservation foods.

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