BIO-CHEMICAL COMPOSITION OF DIFFERENT POTATO VARIETIES FOR PROCESSING INDUSTRY IN BANGLADESH

Abstract

A total of forty potato varieties grown in Bangladesh were evaluated for bio-chemical differences in their composition. The dry matter, starch, reducing sugar, non-reducing sugar and total sugar contents of different potato varieties studied in this experiment were ranged from 13.56 to 24.60%, 6.80 to 18.93%, 0.02 to 0.61%, 0.09 to 0.53% and 0.27 to 0.78%, respectively. The highest protein content was found in ‘Ailsa’ (3.87%) followed by ‘Caruso’ (3.77%) with no significant difference whereas minimum value was observed in varieties ‘Espirit’ (0.79%) which was statistically at par with ‘Saikat’ (0.81%), ‘Sagitta’ (0.85%), ‘Biella’ (0.85%) and ‘Jam Alu’ (0.87%). ‘Tomensa’ and ‘Sagitta’ recorded the highest ash content (1.53%) and ‘Connect’ showed the least ash content (0.76%) followed by ‘Saikat’ (0.82%). Among the varieties, ‘Lady Rosetta’, ‘Ailsa’, ‘Caruso’, ‘Forza’, ‘Amanda’, ‘Ludmila’, and ‘Tomensa’, had dry matter and starch content more than 20% and 17%, respectively and reducing sugar content less than 0.20%. Seven potato varieties out of forty performed best in respect of their different bio-chemical properties and hence recommended for processing industry in Bangladesh.

Keywords

• Dry matter, non reducing sugar, reducing sugar, Solanum tuberosum L., starch