USE OF OKARA WASTE FOR ALGAE NUTRITION

Document Type : Original Article

Authors

1 Food Technology Research Institute, Agricultural Research Center, Giza, Egypt

2 Algal Biotechnology Unit, Fertilization Technology Dept., National Research Centre, Giza, Egypt

3 Food Science Dept., Fac. Agric., Ain Shams Univ., Cairo, Egypt

Abstract

Chlorella vulgaris belonging to Chlorophyta and Nannochloropsis  oculata belonging to Chrythophytawere used in the currentstudy to evaluate whether their successive indoor growth using industrial food waste (okara) as a growth medium enriched with organic carbon and nitrogenThe basic nutrient solutions were BG-II for Chlorella, while F2 was used for Nannochloropsis growth. Okara was used in four concentrations ( 25 , 50 , 75 and 100% )  verses to control and based on its initial nitrogen content. Original waste was diluted by 4 fold of tape water prior inoculation. The investigated parameters were dry weigh (g.l-1); total chlorophyll (mg.l-1) and total carotenoids (mg.l-1). Maximum dry weight of Chlorella was obtained with 25% of okara waste. As for Nannochloropsis, a slight increase was observed with all okara concentrations used. Lower okara concentration (25%) enhanced chlorophyll accumulation by Chlorella vulgaris, while higher concentration (100%) reached the maximum with Nannochloropsis oculata. Completely opposite pattern was observed with total carotene.

Keywords

Arab Universities Journal of Agricultural Sciences
Volume 25, Issue 2 - Serial Number 2
Horticulture No. 16 pp. 243-257
September 2017
Pages 271-279

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