Phosphate Residues Of Invastigation And Control In Meat And Meat Product

This paper investigated the reason of phosphate superscale and searched some method to solve this problem by processing in cooked-beef, researched influence of total phosphate with different conditions in cooked-beef.This paper includes four parts:By inquisited of different raw material in pork, beef, mutton, chicken, duck, we discovered that high standard of phosphatic content had been not only individual phenomenon, but whole phenomenon. Among them, total phosphatic content was between 5.80～7.20 g/kg in the pork and 5.70～7.00 g/kg in the beef, all comes to a very high level. There were about 80% of free phosphate in total phosphate.The influence of heat time was very great (p<0.01) to total phosphate and free phosphate. The influence of heat temperature had no obvious difference (P>0.05). The influence of heat temperature was great (p<0.05) to proportion of free phosphate/total phosphate. After 90 minutes by heating, total phosphate and free phosphate had kept or so in 3.5 g/kg and 2.5 g/kg. At last, the proportion of free phosphate/total phosphate was between 70%～72%. Compare with 80% in the raw material meat, it explained that free phosphate had descended greatly than protein-bound phosphate.The sequence of factor for influencing total phosphatic remains in cooked-beef were: phosphatic quantity > injection rate > heat time. The sequence of factor for yield were: injection rate > phosphatic quantity > heat time. When the phosphotic quantity attained to 2.5 g/kg, the total phosphate remains had already neared to exceed national standard. About 2 g/kg of phosphatic quantity, 30% of injection rate, 90 ℃ of heat temperature, 3 h of heat time, it had not prevent superscale of total phosphate, but kept good quality.The results of pilot test indicate: The phosphatic residues had matched national standard. The product storage attained expectation target and the product quality was also ideal. The product system of quality control also got a further improvement. The result indicated that it had already matched the request of industrialization.