Method for ultrasonic-assisted weak base extraction of proteins in cold-pressed sesame cake meal

• Main Authors: ZHANG LIXIA, HUANG JINIAN, LU XIN, SUN QIANG, SONG GUOHUI
• Format: Patent
• Language: English
• Published: 09.12.2015
• Subjects: FOODS OR FOODSTUFFS; HUMAN NECESSITIES; PHOSPHATIDE COMPOSITIONS FOR FOODSTUFFS; PROTEIN COMPOSITIONS FOR FOODSTUFFS; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES; WORKING-UP PROTEINS FOR FOODSTUFFS

The invention belongs to the technical field of deep processing of oil, and particularly relates to a method for ultrasonic-assisted weak base extraction of proteins in cold-pressed sesame cake meal. The method specifically comprises the following steps: recovering oil in sesame cake meal through subcritical extraction; then, crushing the sesame cake meal after oil extraction, and removing impurities; extracting sesame seed proteins through two times of ultrasonic-assisted base processes; centrifuging a protein extracting solution, taking supernatant, and acid-precipitating the proteins; performing centrifugation to obtain the precipitated proteins; and performing ultrafiltration and drying so as to obtain finished products of sesame seed proteins. Compared with a conventional alkali-solution and acid-isolation method, the method disclosed by the invention has the advantages of high quality of products, little pollution, high efficiency, and the like. Through the adoption of the method disclosed by the invention, an oil production byproduct, namely the low-temperature sesame cake meal, is produced into sesame seed proteins with a high added value, so that the comprehensive utilization of resources is realized, the economic benefits are improved, and the method disclosed by the invention is of positive socioeconomic significance.