Abstract: The present application provides a preparation method for a yeast extract, a corresponding product thereof and an application thereof in soft drinks. The preparation method for a yeast extract of the present application is an autolysis method assisted by adding papain. A chelating agent and an emulsifying agent are added in an autolysis process to adjust sweetness, umami and saltiness of a yeast extract, so as to make the yeast extract more suitable for soft drinks.

Abstract: A blockchain-based optimization method for complex scenarios in an energy system, in which an optimization problem is solved by nodes in the whole network after initialization, a node that solves the problem most quickly obtains a block accounting right and performs a broadcast to the whole network, other nodes verify the correctness of the received block, and the verified block is the global optimal solution of an energy system optimization model. The energy blockchain model provided by the invention can meet the performance demands of complex scenarios in the energy system optimization for safety, openness, throughput capacity and has the landing and application capability.