**2. Data Mining**

In this work, the statistical database, promotion policies, and regulatory measures, and case study relevant to industrial food waste valorization were accessed on the official yearbooks and relevant websites, which were briefly summarized below.

• Activity (statistics and status) of industrial food waste generation

According to the annual yearbook of environmental protection statistics [13], the updated data on the statistics and status of industrial food waste generation and treatment in Taiwan were analyzed in the present study.

• Promotion policies and regulatory measures for industrial food waste valorization

The information about the promotion policies and regulatory measures for industrial food waste valorization was accessed on the relevant website [16], which was built by the Ministry of Justice (MOJ).

• Case study: Production of bioenergy from the anaerobic digestion of urban food waste

An official plan for establishing biogas-to-power plants from the urban food waste was addressed to highlight the environmental and economic benefits of food waste valorization by anaerobic digestion in Taiwan [21].
