| 摘要 |
An artificial feed composition for abalone is produced by preparing a homogenous mixture comprising (i) casein (about 30-50% w/w), (ii) a source of insoluble carbohydrate (about 15-30% w/w), (iii) a source of alginate ions (about 0.5-2% w/w), (iv) a source of lipid (about 0.1-3% w/w), (v) lecithin (about 0.5-5% w/w), (vi) glucono-delta-lactone (GDL), (vii) a base, in an amount sufficient to adjust the pH to about 5.5-6 to enable extrusion of the mixture, and (viii) water (about 15-30% w/w). The mixture is extruded into a desired shape. The extrusion temperature and amount of GDL are such that the GDL will decompose to produce sufficient gluconic acid that the pH of the ended product will decrease to about 4.9 or below, resulting in a composition that is relatively stable in seawater. |
