A STUCY OF NUTRITION AND FOOD HYGIENE ON THE SUNFLOWER PROTEIN CONCENTRATE AS NEW DEVELOPED FOOD PROTEIN RESOURCE IN HEILONG- JIANG PROVINCE IN CHINA / 营养学报

ABSTRACT

The sunflower protein concentrate studied in this paper is a new developed food protein resource in Heilongjiang Province. Up to now the studied report on this product has not been seen in China. Using casein as reference protein and soy protein isolate and gluten from wheat flour as comparable substances we studied the content of major nutrients and the composition of essential amino acid in the sunflower protein concentrate by chemical analysis method, and also studied protein efficiency ratio (PER) and other indicators related to nitrogen metabolism in the animal experiment by the recommended method of AOAC. Some common harmful substances in the samples were examined quantitatively. The results showed that the protein content (as anhydrate basic), the PER, apparent digestibility, the true digestibility, the biological value, and NPU of the sunflower protein concentrate were 62.43%, 1.96, 96.83%, 98.51%, 96.81% and 95.35% respectively. The essential amino acid composition was the same as analogous products prepared in other countries. The blood indicators and pathological observation of tested rats were normal. The content of several harmful substances in the product was allowable.All of these results indicated that the nutritional quality of the sunflower protein concentrate is about the same with some similar porducts prepared in other countries. We believe that these products are safe to consumers in the aspect of food hygiene.