Effect of gelatin nano-coating containing Gardenia pigment on the preservation of pork slices.

The nano-coating composed of gelatin and Gardenia pigment (GP) was successfully prepared and showed strong antioxidant activity. The average particle sizes of the nano-coating containing 0.1% and 0.3% GP were 269.58 and 394.13 nm, respectively. The pork slices uncoated and coated with the nano-coating were preserved at 4 °C for 15 days. The pork slices' pH, total volatile basic nitrogen (TVB-N), total viable counts (TVC), water-binding capacity (WHC), and thiobarbituric acid reactive substances (TBARS) were measured to assess the preservation effect of the nano-coating. The results showed that the pork coated with the nano-coating had lower pH, TVC, TVB-N, TBARS, and higher WHC, significantly different (p < 0.05) than the uncoated pork. It is suggested that the proposed nano-coating can be used to effectively improve the pork's quality and shelf life during refrigeration storage.

[Evaluation of gastric lavage treatment for severe acute organophosphorus pesticides poisoning complicated by respiratory failure requiring mechanical ventilation].

OBJECTIVE: To discuss the measures of gastric lavage for severe acute organophosphorus pesticides poison (AOPP) patients complicated with respiratory failure and treated with mechanical ventilation. METHODS: 92 cases of respiratory failure due to severe AOPP treated with mechanical ventilation were treated for gastric lavage with nasal gastric tube or gastrotomy. Patients of each gastric lavage method were divided into fasting toxicosis group (fasting group) and post-meal toxicosis group (post-meal group). RESULTS: When treated for lavage with nasal gastric tube, the duration of coma, the time for reaching atropinization and the dosage of atropine needed, the total dosage of atropine used, the mechanical ventilation time, the time for restoring 50% of the normal value of choline esterase, the hospitalization time and charges, the relapse rate, the rate of atropine toxicosis and mortality were respectively: 13 (3 - 24) h, 180 (60 - 290) min, 150 (80 - 310) mg, 300 (90 - 870) mg, 17 (4 - 52) h, (5.0 +/- 2.3) d, 9 (7 - 18) d, (8080 +/- 2570) yuans, 0, 0, and 4.76% in the fasting groups; all the figures were superior to those of the post-meal group with the same treatment: 26 (4 - 55) h, 380 (110 - 690) min, 360 (90 - 730) mg, 3610 (1100 - 9070) mg, 36 (6 - 110) h, (7.8 +/- 3.6) d, 12 (9 - 35) d, (10 720 +/- 3350) yuans, 45%, 30%, and 30.00% (P < 0.01 or P < 0.05). There was no obvious difference between the fasting group and the post-meal group in curative effect, complication occurrence rate and mortality except for the charges when treated with gastrotomy. For the post-meal toxicosis patients gastrotomy showed a better effect than the nasal gastric tube and there was no difference in charges. CONCLUSIONS: It is suggested that severe AOPP patients complicated with respiratory failure and treated with mechanical ventilation should hare lavage with nasal gastric tube, if they were poisoned in fasting state, but they should be washed through gastrotomy if poisoned after meal.

[Clinical application of improved percutaneous tracheostomy with dilatational technique].

OBJECTIVE: To evaluate clinical application of improved percutaneous tracheostomy with dilatational technique. METHODS: In 55 patients an improved percutaneous tracheostomy was used, and in another 52 patients an old technique of percutaneous tracheostomy was used. RESULTS: The cost of the improved percutaneous tracheostomy was only (216.0+/-4.4) yuan, operation time was (5.0+/-3.5) minutes, while the cost of the old method was (3 011.0+/-5.3) yuan, and operation time was (10.0+/-6.9) minutes. The difference between them was significant (t=23.60, 4.76, both P<0.001), but there were no differences in the time of bleeding and healing (both P>0.05). CONCLUSION: The improved percutaneous tracheostomy was more expeditious, costless, better healing, scar smaller. Therefore, it is useful in emergency care, and it can take the place of classical tracheostomy.