Abstract:

To evaluate nutritive value of Solenaia oleivora, S.oleivora collected from Huaihe River was used as material, the seasonal variations of nutrients and mineral elements were detected and compared by conventional nutrient composition analysis and biochemical assay. The results showed that flesh contents of S.oleivora collected in March, June, September and December ranged from 58.03% to 62.61%. The flesh content in June was significantly lower than that in December (P < 0.05), but there was no significant difference among June, March and September (P > 0.05), and there was no significant difference among March, September and December (P > 0.05). There was no significant seasonal difference in terms of water content and crude fat (P > 0.05). The crude protein in March was obviously higher than that in June, September and December (P < 0.05), but there was no significant difference among three other seasons (P > 0.05). The ash content in March was significantly lower than that in June, September and December (P < 0.05), while there was no significant difference among three other seasons (P > 0.05). The soft body (dry substances) of S.oleivora from Huaihe River contains 7 essential amino acids and 10 non-essential amino acids. The total amino acid (TAA) ranged from 52.12% to 54.31%, and the essential amino acid (EAA) ranged from 20.57% to 21.94%, and the delicious amino acid (DAA) content was 19.09%-19.43%. There was no significant difference found in TAA, EAA and DAA among the four seasons (P > 0.05). In the six detected mineral elements, Hg was not detected in all samples due to its low level, and there was no significant seasonal difference of other elements including Mn, Fe, Zn, Cu, Cd and Pb. The results indicate that S.oleivora from Huaihe River has relatively high nutritive value and good edible value.

Key words: Solenaia oleivora, Nutrient, Mineral Elements, Seasonal Variation