From lactic acid fermentations of produce (such as kimchi and sauerkraut), to fermenting of dairy (cheese, yogurt, etc.), to the curing and smoking of fish and meat are all proven, effective methods and technologies humans have relied on through the ages to alter the intrinsic properties of foods and extend their consumability.
Consumers have long shown a reluctance to purchase food containing artificial preservatives, with research finding that 57% globally prefer products that are free from additives and 62% are concerned about ingredients that sound chemical.