Compound enzyme preparation for oil extraction and oil extraction method

Abstract

The invention discloses a compound enzyme preparation for oil extraction. The compound enzyme preparation comprises 1 to 3 parts of neutral protease, 1 to 3 parts of alkaline protease, 0.1 to 0.3 partof flavor enzyme, 0.1 to 0.3 part of collagenase and 1 to 3 parts of a carrier in parts by weight. Furthermore, the invention discloses a technological method of the compound enzyme preparation for the oil extraction. The method comprises the following steps: controlling pH to be 7.5 to 8.5, the enzymolysis temperature to be 52 to 65 DEG C, the ratio of materials to liquid to be (2:1) to (4:1), the enzymolysis time to be 2 to 4 hours, and the additive amount to be 0 .1% to 0.5%, thereby being capable of achieving optimum extraction process conditions. The invention has the following technicaleffects: 1) using an enzymolysis method to achieve the purpose of large-scale extraction of oil in slaughtered scraps; 2) using the compound enzyme preparation to extract the oil, thereby being capable of improving the oil extraction rate and oil extraction quality of the slaughtered scraps; 3) precipitating and spray-drying extracted enzymatic hydrolysate and then preparing into high-protein feed, thereby realizing resource utilization and further improving culture benefits.

Description

technical field [0001] The invention relates to the field of oil extraction, in particular to a compound enzyme preparation for oil extraction and an oil extraction method. Background technique [0002] After nearly 30 years of continuous development, my country's aquaculture industry has gradually formed a large-scale, intensive, and professional development scale. Along with this, the livestock and poultry slaughtering industry has also become increasingly large-scale. One of the problems that urgently needs to be solved. [0003] Although there are more and more researches and applications on the comprehensive utilization of slaughtering waste in recent years, and some breakthroughs and progress have been made. However, generally speaking, the comprehensive development and utilization of livestock and poultry leftovers in my country is relatively low at present. The existing extraction methods mainly include traditional dry and wet cooking, but both of them have some defe...

AI Technical Summary

Problems solved by technology

However, generally speaking, the comprehensive development and utilization of livestock and poultry leftovers in my country is relatively low at present. The existing extraction methods mainly include traditional dry and wet cooking, but both of them have some defects and need to be improved: traditional dry cooking High temperature will greatly damage the fatty acid composition in the oil, increase the peroxide value, and at the same time, the oil yield is low, the color is deep, and the benefit cost is high

Traditional wet cooking is to add some water during the cooking process of slaughter leftovers, resulting in high moisture content in the extracted oil, which is prone to oxidative rancidity and poor flavor, and the extracted oil needs to be further refined

Images