Abstract: In this paper the species growth characteristics.heat resistance,and reasons of engendering of the thermoacidophilic bacteria in the processing of apple juice concentrate were analyzed and studied in detail.And the hazards to the apple juice by the growth of the thermo-acidophilic bacteria were elaborated.Finally,some solutions for the control of the thermo-acidophilic bacteria in the processing of apple juice concentrate were obtained especially according to the processing technique.

Key words: Apple juice concentrate Thermo-acidophilic bacteria Alicycobacillus Reasons of engendering Control