Fermentation complex with delaying aging and improving sleeping effect by generating of brain dopamine, preparation and application thereof

A method for preparing a fermentation complex with anti-aging and sleep-promoting effects through dopamine generation in the brain, comprising:

• a raw material crushing process:
• wherein the raw material is individually obtained by means of a pressing process to yield a crude extract, wherein the raw material is Gastrodia elata fruiting body, Black rice, and Wheat seedlings, wherein the crude extract includes Gastrodia elata fruiting body extract, Gastrodia elata fruiting body residue, black rice extract, black rice residue, Wheat seedlings extract, and Wheat seedlings residue;
• a negative pressure food processing process:
• crude extract is subjected to a negative pressure food processing process at 20 cmHg to 60 cmHg for a duration of 5 to 14 days to obtain a first extract;
• a refinement fermentation process:
• introduced a pectinase enzyme at 0.1% to 0.5% (w/w) and a lactic acid bacterium at 0.2% to 2% (w/w) into the first extract, in this refinement fermentation process, the fermentation temperature is maintained at 22 to 28° C., and fermentation continues for 8 to 14 days to obtain a first fermentation liquid;
• and
• a modification fermentation process:
• introduced a yeast or acetic acid bacterium into the first fermentation liquid at 0.2% to 2% (w/w), and the fermentation temperature is maintained at 22 to 28° C., and fermentation continues for 10 to 21 days to obtain a second fermentation liquid.