The invention provides a fruit and vegetable
cleaning agent as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) harvesting according to growth periods of different plants, cleaning, crushing, adding
sterile water, adding
lactobacillus crispatus and
rhodococcus ruber, and fermenting to obtain low-temperature
fermentation liquid; (2) cleaning and
cutting healthy stems and leaves of
longevity grass, clover, Chinese cabbage, oilseed rape, crowndaisy chrysanthemum and
spinach, respectively filling the stems and leaves into respective containers, adding boiling water, respectively soaking, and extruding liquid by filter cloth to respectively obtain stock solutions; (3) mixing the stock solutions to obtain a mixed
stock solution, adding compound
bacteria into the mixed
stock solution, and fermenting to obtain a high-temperature soaking solution; and (4) mixing the low-temperature
fermentation liquid, the high-temperature soaking liquid and an adsorbent to obtain a mixture, and adding a compound
enzyme to obtain the fruit and vegetable
cleaning agent. The fruit and vegetable
cleaning agent can well degrade
pesticide residues in fruits, vegetables and fish meat products, and has
high activity, stability and wide applicability.