High-valued utilizing method of haematococcus pluvialis algal residue in economic crab fattening fodder

Abstract

The invention discloses a high-valued utilizing method of haematococcus pluvialis algal residue in an economic crab fattening fodder, which includes steps of (1), testing content of astaxanthin in thehaematococcus pluvialis algal residue; (2), confirming the additive amount of the haematococcus pluvialis algal residue in different economic crab fattening fodder formulas; (3), processing the economic crab fattening fodder by using a proper fodder processing technique; and (4), scientifically feeding the economic crabs by the fattening fodder to fatten. The method can calculate the additive amount of the haematococcus pluvialis algal residue in the fodder formula according to the demand of astaxanthin in the crab fattening period and astaxanthin content in the haematococcus pluvialis algalresidue; the method carries out scientific fattening according to the development of crab ovary. The fattening fodder prepared and used by the method can reduce the fodder formula cost of over 1500 Yuan / Ton, and improve the crab fattening effect; the red paste rate after fattening is up to 85% above.

Description

technical field [0001] The invention relates to a high-value application method of Haematococcus pluvialis algal residue in crab fattening feed, and belongs to the technical field of aquatic feed and breeding. Background technique [0002] Haematococcus pluvialis is an important freshwater economic green algae, its dry powder usually contains 1.5-6% natural astaxanthin, is the main source of natural astaxanthin, and has high economic value ( Sandeshe et al, 2008; Orosa et al, 2005). The natural astaxanthin in Haematococcus pluvialis powder is all-trans L-astaxanthin, which exists in the form of esterification, has stable properties and high bioavailability (Holtin et al, 2009); in addition, natural shrimp Penicillins can inhibit tumor cell proliferation (Cenariu et al., 2015), improve antioxidant and immunity (Fiedor and Burda, 2014; Hughes, 2001), anti-aging (Kidd, 2011), reduce the risk of cancer and cardiovascular disease (Shareck et al., 2017; Riccioni, 2009) and other...

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Problems solved by technology

However, the natural astaxanthin derived from Haematococcus pluvialis powder is expensive, usually converted into pure astaxanthin as high as 50 yuan per gram. At present, natural astaxanthin extracted from Haematococcus pluvialls powder is mainly used in food and health products In the fields of medicine and cosmetics, it is impossible to provide a sufficient amount of natural astaxanthin extracted from Haematococcus pluvialis to the aquatic feed industry; It only accounts for about 25% of the synthetic astaxanthin content, and its biological efficiency is only about one-third of the natural astaxanthin derived from Haematococcus pluvialis, and its safety to the human body has been questioned (Ma Nan et al, 2017; Capelli et al, 2013); although shellfish such as snails and blue clams contain a certain amount of natural astaxanthin, the source and quality are unstable, which cannot meet the needs of the crab breeding industry

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