Research On Extraction Of Antioxidant Polypeptide And Removal Of Heavy Metal From Abalone Viscera

Abalone has a high nutritional value,contains a lot of protein,calcium,iron,vitamin A and other nutrients.It is a traditional Chinese medicinal herbs and precious ingredients.With the improvement of people's living standards and the increase demand for abalone,abalone farmers become more and more,processing industry is booming naturally.But in abalone processing there will produce a lot of waste,such as abalone viscera which accounting for the weight of abalone 20-30%a,abalone shell,etc..They are mostly discarded or simple processed into feed,not only waste of resources,but also bring great pollution to the environment.Abalone viscera had been adopted hot water extraction,enzymatic,enzymatic binding HPEF abalone viscera and other methods of processing,alcohol precipitation,the supernatant from experience that the bottom was abalone viscera,also establish conditions for enzymatic preparation of peptides and peptide abalone viscera heavy metal process of removal.Peptide is an important physiological regulator of the body,it can fully regulate physiological functions,enhance play physiological activity,with important biological functions.Peptides are important for the activity of the body's cells,functional activities,the existence of life.However,due to a variety of factors make modern human peptide loss,damage,greatly weakened the ability of synthetic peptides,so it is easy to lack of peptide for human,they must add synthetic peptides appropriately.Adding peptide is complement liveness,complement activity,complement lives.This thesis contents and results are as follows:1 bottom abalone organs contains 0.57%polysaccharides,28.86%peptides,12.75%water and other ingredients.2 use five different proteases to enzymolysis abalone viscera,then get hydrolysate and measured its degree of hydrolysis and reducing power,by comparison it determine the alkaline protease is the best oroteolytic enzymes.The effects of temperature,time,pH,substrate concentration,the amount of abalone viscera enzyme digestion,the results showed that:at substrate concentration of 10%,plus the amount of enzyme 4500U/g,a temperature of 50? abalone viscera enzymatic for 4h is best.3 via enzymatic solution optimized process for the removal of heavy metals in negative resin 717,732 male resin,D751 male resin,D301 anion resin has adsorption treatment,adsorption 60min,heavy metal removal rate up to 95.8%.Abalone viscera enzymatic liquid residues of heavy metals in line with the national standard GB2762-2012 that "contaminants in foods standards" requirement.