Abstract: Some embodiments of food preservatives, methods of preparation thereof, and methods of room-temperature preservation, in the technical field of food preservation, are disclosed. In some embodiments, the food preservative includes chitosan, Chinese prickly ash oil, and astaxanthin. In other embodiments, the food preservative includes glycerol, acetic acid, and water. In further embodiments, the glycerol, the acetic acid, and the water are at a volume ratio of 5-30:5-25:915-985, and the chitosan and the water are at a mass-volume ratio of 5-20 g:915-985 mL. In some embodiments, the Chinese prickly ash oil, the chitosan, and the astaxanthin are at a volume-mass-mass ratio of 5-30 mL:5-20 g:0.01-0.06 g.

Abstract: Disclosed is Lactobacillus helveticus ZJUIDS12 for treating alcoholic liver disease and application thereof, belonging to food microorganisms. The Lactobacillus helveticus ZJUIDS12 has a strain preservation number of CGMCC NO. 23997. Moreover, disclosed is an application of the Lactobacillus helveticus ZJUIDS12 in preparing products for treating liver injury.

Abstract: The present disclosure provides a preservation method for room temperature logistics of fresh meat, e.g., pork, including the following steps: cutting a slaughtered pig into pieces while the pork is hot, and cooling to 0° C. to 4° C.; cooling again to ?4° C. to ?2° C. so that the meat pieces reach a chilled/slightly-frozen state; sub-packaging the chilled/slightly-frozen meat pieces; putting sub-packaging boxes with fresh meat pieces into an insulation foam box together with ice bags for packaging; and using a room temperature logistics vehicle for transportation and distribution, where, when in an ambient temperature is at least 24° C. (e.g., summer), transportation and distribution time is ?36 h; and when the ambient temperature is less than 24° C. (e.g., spring, autumn, and winter), the transportation and distribution time is ?72 h.