This document summarizes a study on biochemical changes in cabbage (Brassica oleracea L. var Capitata) leaves during senescence under different temperature conditions. The study found that protein, RNA, phosphorus, chlorophyll, and certain enzyme content decreased more under room temperature compared to refrigeration or deep fridge storage. However, most vitamin levels remained stable under refrigeration and deep fridge storage after 72 hours, except for vitamin C which decreased more under room temperature.