Application of plant green juice powder in maintaining stability of viable count of yoghourt in shelf life

The invention provides novel application of plant green juice powder, in particular application of the plant green juice powder in maintaining the stability of viable count of yoghourt in shelf life, and/or application of the plant green juice powder in inhibiting the growth of pernicious bacteria in the yoghourt. The invention also provides a method for preparing yoghourt added with the plant green juice powder, and the yoghourt prepared by the method. In the method, the yoghourt is taken as a carrier and is added with the plant green juice powder, and the prepared yoghourt can maintain the constancy of the viable count of Lactobacillus delbrueckii ssp. bulgaricus in shelf life and can inhibit the growth of the pernicious bacteria. Moreover, the prepared yoghourt product has good flavor and mouthfeel and high stability of the viable count in shelf life through a reasonable formula and an appropriate process.