In order to compare the differences between variations of phosphate ore flotation collectors prepared by hogwash oils, JZQ-F collectors were prepared by the hydrolysis method using four types of hogwash oils from diff...In order to compare the differences between variations of phosphate ore flotation collectors prepared by hogwash oils, JZQ-F collectors were prepared by the hydrolysis method using four types of hogwash oils from different regions in China. The components of the hogwash oils were determined using Fourier transform infrared spectroscopy(FIIR) spectra analysis, while the components of the JZQ-F were determined through gas chromatography–mass spectrometry(GC–MS). The flotation effects of the JZQ-F collectors were investigated by flotation experiments and the adsorption characteristics were determined through the quartz crystal microbalance(QCM-D). Results show that the JZQ-F collector from the Ordos area has 27.43% unsaturated fatty acids. JZQ-F collectors from Beijing, Qingdao, and Dongguan areas contain over 62% of unsaturated fatty acids, which can acquire phosphorous concentrates with a the grade of P_2O_5 above 31.96% and the recovery higher than 91.52%. These three collectors have a larger adsorption capacity, faster adsorption rate, and stronger adsorption structure on apatite surface, which contributed to a good adsorption performance and a favorable flotation effect.展开更多
As the main byproduct of cotton fiber,the cotton seed yields about 1.6 times that of fiber,with its oil rich in unsaturated fatty acids,mainly linoleic acid.It is desirable for breeders to increase the oil content of ...As the main byproduct of cotton fiber,the cotton seed yields about 1.6 times that of fiber,with its oil rich in unsaturated fatty acids,mainly linoleic acid.It is desirable for breeders to increase the oil content of cottonseed without affecting the yield and quality of cotton fiber.In this study,a seed-specific promoter-(alpha-globulin gene promoter-)driven GhDGAT1 overexpression vector(P_(aGlob)-GhDGAT1)was constructed and used to transform an upland cotton line YZ1(Gossypium hirsutum).Overexpression of the cotton gene GhDGAT1 in cotton seeds increased its total oil content from 4.7%to 13.9%in different transgenic lines and different generations.With the increase of oil content,the composition and contents of the main fatty acids in cotton seed also changed,as reflected by the contents of the main saturated fatty acids and unsaturated oleic acid.GhDGAT1 could be used to increase oil content and improve oil composition in cottonseed.展开更多
The aim of this study was to select sheep fat from Tsetserleg sum of Arkhangai aimag as raw material and to produce liquid soap. The oil was extracted from raw materials such as sheep’s tail fat (TF), outer fat (OF),...The aim of this study was to select sheep fat from Tsetserleg sum of Arkhangai aimag as raw material and to produce liquid soap. The oil was extracted from raw materials such as sheep’s tail fat (TF), outer fat (OF), and inner fat (IF), which were analyzed by chemical methods, and the liquid soap was obtained by cold methods. Liquid soap was prepared from three types of raw materials, each of which was mixed with 70% fat oil and 30% liquid oil. The ratio was chosen to dilute the liquid soap to 2% of the product. The most suitable oil for preparing liquid soaps from raw materials such as TFO, OFO, and IFO was the tail fat oil (TFO). The highest unsaturated fatty acid content in crude fats and oils was 41.23%, the highest content of saturated fatty acids was 22.3%, and the highest content of methyl-stearate was 33.65% by the GC-MS analytical method.展开更多
文摘In order to compare the differences between variations of phosphate ore flotation collectors prepared by hogwash oils, JZQ-F collectors were prepared by the hydrolysis method using four types of hogwash oils from different regions in China. The components of the hogwash oils were determined using Fourier transform infrared spectroscopy(FIIR) spectra analysis, while the components of the JZQ-F were determined through gas chromatography–mass spectrometry(GC–MS). The flotation effects of the JZQ-F collectors were investigated by flotation experiments and the adsorption characteristics were determined through the quartz crystal microbalance(QCM-D). Results show that the JZQ-F collector from the Ordos area has 27.43% unsaturated fatty acids. JZQ-F collectors from Beijing, Qingdao, and Dongguan areas contain over 62% of unsaturated fatty acids, which can acquire phosphorous concentrates with a the grade of P_2O_5 above 31.96% and the recovery higher than 91.52%. These three collectors have a larger adsorption capacity, faster adsorption rate, and stronger adsorption structure on apatite surface, which contributed to a good adsorption performance and a favorable flotation effect.
基金This work was supported by National Science and Technology Major Project of the Ministry of Science and Technology of China(2016ZX08005-005).
文摘As the main byproduct of cotton fiber,the cotton seed yields about 1.6 times that of fiber,with its oil rich in unsaturated fatty acids,mainly linoleic acid.It is desirable for breeders to increase the oil content of cottonseed without affecting the yield and quality of cotton fiber.In this study,a seed-specific promoter-(alpha-globulin gene promoter-)driven GhDGAT1 overexpression vector(P_(aGlob)-GhDGAT1)was constructed and used to transform an upland cotton line YZ1(Gossypium hirsutum).Overexpression of the cotton gene GhDGAT1 in cotton seeds increased its total oil content from 4.7%to 13.9%in different transgenic lines and different generations.With the increase of oil content,the composition and contents of the main fatty acids in cotton seed also changed,as reflected by the contents of the main saturated fatty acids and unsaturated oleic acid.GhDGAT1 could be used to increase oil content and improve oil composition in cottonseed.
文摘The aim of this study was to select sheep fat from Tsetserleg sum of Arkhangai aimag as raw material and to produce liquid soap. The oil was extracted from raw materials such as sheep’s tail fat (TF), outer fat (OF), and inner fat (IF), which were analyzed by chemical methods, and the liquid soap was obtained by cold methods. Liquid soap was prepared from three types of raw materials, each of which was mixed with 70% fat oil and 30% liquid oil. The ratio was chosen to dilute the liquid soap to 2% of the product. The most suitable oil for preparing liquid soaps from raw materials such as TFO, OFO, and IFO was the tail fat oil (TFO). The highest unsaturated fatty acid content in crude fats and oils was 41.23%, the highest content of saturated fatty acids was 22.3%, and the highest content of methyl-stearate was 33.65% by the GC-MS analytical method.
