Isolation and Identification of a New Saponin from Dahurian Patrinia Root and Rhizome (Patrinia scabiosaefolia) Inhibition Effects of Flavonoids from Exocarpium citri Grandis on Nitrosation Optimization of Method for Extraction and Isolation of β-conglycinin from Soybean Seed Matrine Extraction and Isolation, and Toxicity to Mus musculus Research progress in extraction and isolation of plant polyphenols Extraction and isolation technology of polysaccharide from mulberry leaves Study on chemical constituents from seed of Oroxylum indicum