Publication Date
1985
Location
Kyoto Japan
Description
Effect of treatments of plant juice on the yield and nutritive value of leaf protein concentrate (LPC) was studied with special reference to anaerobic fermentation using lucerne and Italian rye grass as the materials. Lucerne juice was .subdivided into three portions. The two portions were heated to 70°C immediately or after being adjusted to pH 8 with NaOH. The other portion was anaerobically fermented for 7 days. One half of ryegrass juice was heated to 70°C after being adjusted to pH 4 with HCI and the other half was submitted to the fermentation. After the treatments, each juice was centrifuged at 15,000 rpm and the resultant coagulum (LPC) was dried at 70°C with a draft oven. Before the drying, a part of the immediately-heated lucerne LPC was washed with 90% EtOH. The NaOH-treatment of lucerne juice before heating increased the yield of LPC and improved the nutritive value of LPC in chicks. Fermentation of lucerne juice reduced the yield, crude protein content, protein digestibility and rate of essential amino acid to crude protein of LPC. The yield of digestible crude protein was decreased by about 50% of that of NaOH-treated LPC by the fermentation. Feed intake and growth of chicks fed the fermented luceme LPC was extremely low because of a high concentration of medicagenic acid. Addition of cholesterol to luceme LPCs was as effective as the EtOH-treatment in improving the intake and growth of chicks. But the improved value observed in chicks fed the fermented lucerne LPC was still lower than those fed the other LPCs. Performance of rats was not affected by the medicagenic acid content of LPC. The fermentation of ryegrass juice was as detrimental as being in luceme juice, but feed intake of chicks was not affected by it.
Citation
ohshima, M and Ueda, H, "Effect of Anaerobic Fermentation of Plant Juice on the Yield and the Nutritive Value of Leaf Protein Concentration" (1985). IGC Proceedings (1985-2023). 27.
(URL: https://uknowledge.uky.edu/igc/1985/ses9/27)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Effect of Anaerobic Fermentation of Plant Juice on the Yield and the Nutritive Value of Leaf Protein Concentration
Kyoto Japan
Effect of treatments of plant juice on the yield and nutritive value of leaf protein concentrate (LPC) was studied with special reference to anaerobic fermentation using lucerne and Italian rye grass as the materials. Lucerne juice was .subdivided into three portions. The two portions were heated to 70°C immediately or after being adjusted to pH 8 with NaOH. The other portion was anaerobically fermented for 7 days. One half of ryegrass juice was heated to 70°C after being adjusted to pH 4 with HCI and the other half was submitted to the fermentation. After the treatments, each juice was centrifuged at 15,000 rpm and the resultant coagulum (LPC) was dried at 70°C with a draft oven. Before the drying, a part of the immediately-heated lucerne LPC was washed with 90% EtOH. The NaOH-treatment of lucerne juice before heating increased the yield of LPC and improved the nutritive value of LPC in chicks. Fermentation of lucerne juice reduced the yield, crude protein content, protein digestibility and rate of essential amino acid to crude protein of LPC. The yield of digestible crude protein was decreased by about 50% of that of NaOH-treated LPC by the fermentation. Feed intake and growth of chicks fed the fermented luceme LPC was extremely low because of a high concentration of medicagenic acid. Addition of cholesterol to luceme LPCs was as effective as the EtOH-treatment in improving the intake and growth of chicks. But the improved value observed in chicks fed the fermented lucerne LPC was still lower than those fed the other LPCs. Performance of rats was not affected by the medicagenic acid content of LPC. The fermentation of ryegrass juice was as detrimental as being in luceme juice, but feed intake of chicks was not affected by it.
