The oil and protein content together account for about 60% of dry soybeans by weight
Oil content : The oil and protein content together account for about 60% of dry soybeans by weight; protein at 40% and oil at 20%. The remainder consists of 35% carbohydrate and about 5% ash. Soybean cultivars comprise approximately 8% seed coat or hull, 90% cotyledons and 2% hypocotyls axis or germ. The majority of
Soy protein is a relatively heat-stable storage protein. It is this heat-stability of the soy protein that enables soy food products requiring high temperature cooking, such as tofu, soymilk and textured
vegetable protein (soy flour) to be made. The principal soluble carbohydrates, saccharides, of mature soybeans are the disaccharide sucrose(range 2.5?.2%), the trisaccharide raffinose (0.1?.0%) composed of one sucrose molecule connected to one molecule of galactose, and the tetrasaccharide stachyose(1.4 to 4.1%) composed of one sucrose connected to two molecules of galactose. Cultivation Type of soil and weather for cultivation : The best planting date of vegetable soybean differs with season and location depending upon temperature and daylength. The optimum temperature range of soybean cultivation is 20-30Ê with short daylength (14 hours or less). However, planting should be avoided at cooler temperatures during winter. Loam soil with pH of 6.0-6.5 is suitable for its cultivation, but the field should be well drained. Field preparation : Land tillage makes the soil friable for good germination, increases soil porosity and aeration for healthy plant growth. Tillage kills weeds to control weed-crop competition for soil nutrients, moisture and light. This in turn helps plant productivity. Plow and rot till the field. The soil should not be too dry at the time of seedbed preparation. Inadequate moisture will result in poor seed germination. Harvest : Harvesting is done when 80% of the pods have reached physiological maturity stage. It may take 65 to 75 days after germination for vegetable soybeans to be ready for harvest depending upon variety, temperature and weather conditions. The pods are still green. In Taiwan, harvesting usually begins at midnight when dew and cool temperature help to preserve the green color and freshness of the vegetable soybeans. When harvested in daytime, the plants are kept under the shade. The pods are stripped from the plants by hand. Harvesting machines can save labor, cost and time.
Product Type: Soybeans |
Style: Preserved |