A survey on total carotenoids, chlorophyll a and b and also antioxidant activity of derived from four strain of green alga isolated from the Golestan coasts, (Caspian Sea)

Aims & Due to Micro algae properties including nutritional value, medicinal properties, high amount of protein, vitamins, minerals, natural pigments such as phycocyanin and Carotenoids, they can use in the food industry - hygienic, cosmetics, food additives for human, animals, poultry and Aqua feed. Carotenoids are an important group of natural pigments, which produce only by plants and micro algae; in addition they have also antioxidant properties which make them useful for medical applications. This study was conducted to identify the micro algal species by standard techniques such as morphological and biochemical characteristics
In this study, the samples were isolated and purified from Golestan coasts, Khazar Lake and cultivated in F/2 & BBM medium. The following method was used for measurements: Methanol extraction Lichtenthaler for total carotenoids and chlorophyll and DPPH for antioxidant activity.
The purpose of this study was to investigate the potential locally Micro algae from Golestan coasts as a Carotenoids Source. Morphological characters identification has confirmed, Selenastrum sp. Chlorella volgaris , Chlamydomona debaryana ,Chlorella sorkinia as isolated species. Their Chlorophyll a concentration were 6.7, 5.1, 12.5, 7.8 and concentration total Carotenoid 2.2, 1.4, 2.4, 1.6 mg/gr total respectively. IC50 of isolates methanol extract were 2.87, 4.03, 2.78, 3.75 mg and IC50 of isolates hexan extract were 6.49, 4.9, 3.75, 8.35mg.
There is a high diversity of microalgae in Iran with unknown applied potential. Thus in this study we have isolated four strains and their characters have investigated. Based on the results antioxidant activity of methanol extract is upper than anti oxidant activity of hexan extract. The highest anti oxidant activity was seen in Chlamydomona debaryana.