BIOCHEMICAL STUDIES ON SUNFLOWER SEED BY-PRODUCTS

Abstract

Sunflower (Helianthus annuus L.) is the second largest oilseed crop as a world source of vegetable oil and characterized by protein with good nutritional qualities. Sunflower meal also represents protein source of great interest as a human food. Sunflower seed by- product meal were obtained from Misr Company for oils and soap, El- Badrashine branch. The chemical composition, removal of polyphenolic compounds and factors affecting its extraction and concentrated or isolated protein were studied in sunflower kernels (dehulled seed) and by-products. The obtained results indicate that fat content is higher in sunflower kernels and seeds than in by-products since its ratios were 55.4, 41.85 and 5.45%, respectively. The dehulled sunflower meal (kernels) contain lower crude fiber content (9.3%) compared with the seeds (20.91%) and by-products (29.96%). The crude total protein was found to be higher in by­ products 52.8% than in sunflower seeds and kernels (22.55 and 26.68%, respectively).