Sheep hemoglobin polypeptide powder and preparation method thereof

Abstract

The invention discloses sheep hemoglobin polypeptide powder and preparation method thereof, belonging to the field of food additives. The method mainly includes the following steps: adding trisodium citrate into sheep blood, then separating the mixture through centrifugation to get sheep hemoglobin solution, putting the sheep hemoglobin solution in a sealed container and exhausting the air in the container through a vacuum pump to remove the mutton odor; diluting the sheep hemoglobin solution through water, adding papain to the solution so as to have enzymatic hydrolysis reaction, and collecting the products of the enzymatic hydrolysis reaction; and ultra-filtering the products through an ultrafiltration membrane, concentrating and drying. In this way, sheep hemoglobin polypeptide powder can be prepared. Firstly, the sheep hemoglobin polypeptide powder prepared through the method is of high nutritional value and has antioxidation, immunoregulation and blood pressure reduction functions; secondly, with no mutton odor, the sheep hemoglobin polypeptide powder is easy to be accepted by consumers; thirdly, the sheep hemoglobin polypeptide powder has high safety and no side effects; fourthly, the preparation method is simple and easy and low in cost; and fifthly, the invention reduces the drainage of sheep blood and environment pollution.

Description

technical field [0001] The invention belongs to functional food raw materials, functional food and food nutrition enhancer, in particular to sheep hemoglobin polypeptide powder and a preparation method thereof. Background technique [0002] Blood protein has a very high biological value, contains 8 kinds of essential amino acids needed by the human body, and its composition is balanced, which is a high-quality protein source. However, at present, animal blood, especially sheep blood, is mostly discharged or discarded in the form of sewage, resulting in the loss of a large amount of valuable nutritional resources and causing serious pollution to the environment. In sheep blood, hemoglobin accounts for 60-70% of its total protein content. Hemoglobin bioactive peptides have many extremely important functional activities, such as opioid activity (Brantl, 1986; Piot, 1992; Zhao, 1996; Zhao, 1997; Nyberg, 1997; Lignot, 1999), ACE inhibitory activity (Hyun & Shin, 2000) , enhance...

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Problems solved by technology

At present, the patents related to hemoglobin products mainly include "A Hemoglobin Polypeptide Powder and Its Preparation Method" (Application No.: 200810222237.9), "A Hemoglobin Polypeptide Amino Acid Nutrient and Its Preparation Method" (Application No.: 200810222240.0), "A An Antioxidant Active Peptide and Its Preparation Method" (Application No.: 200810103445.7), but no report about sheep hemoglobin polypeptide powder was found. One of the reasons is that sheep blood has a smell and is difficult to use as a food ingredient.