MAJOR NUTRITIONAL COMPONENT OF SILKWORM (BOMBYX MORI L:) POWDER

摘要

The chemical composition and antioxidant activity of the powder obtained from fifth-instar larvae (3-day-old) of hybrids PM x CSR2 (H1) and CSR2 x CSR4 (H2) were studied. Powders from H1 and H2 had moisture contents of 85.10 and 85.78%, respectively. The total N content significantly varied between fed and starved hybrids of H2 (11.57 and 10.51%) and H1(9.64 and 8.71%). The crude protein content reached 72.31 and 65.6% in fed and starved H2, and 60.25 and 54.44% in fed and starved H1, respectively. Powders from fed larvae registered higher protein digestibility percentage than starved larvae, and the powder from H2 was superior for this parameter than the powder from H1. The soluble protein content was significantly higher for powders from fed larvae than for powders from starved larvae. The powder from fed H1 had a higher soluble protein content than starved H2, whereas powders from starved H2 had significantly higher soluble protein content than starved H1. The powder from fed and starved larvae of H2 and that from fed H1 had significantly higher carbohydrate contents than the powder from starved H1. H1 powder had a higher crude fat (by 20.81%) and crude fibre (by 20.66%) contents than H2 powder. Ash and calcium contents were higher in H2 powder than in H1 powder. The P content did not markedly vary between the hybrids. The DPPH activity and total phenolic content were greater for H2 powder than for H1 powder.