目的探究嫩芽海带加工过程中不同工序对营养成分及矿物质的影响。方法本研究探究了嫩芽海带在加工过程中热烫和盐渍工序对其主要营养成分和矿物质的影响。结果新鲜嫩芽海带的水分、粗蛋白质、膳食纤维、粗脂肪、褐藻胶、甘露醇、碘、氨...目的探究嫩芽海带加工过程中不同工序对营养成分及矿物质的影响。方法本研究探究了嫩芽海带在加工过程中热烫和盐渍工序对其主要营养成分和矿物质的影响。结果新鲜嫩芽海带的水分、粗蛋白质、膳食纤维、粗脂肪、褐藻胶、甘露醇、碘、氨基酸、锰、磷、铁和钾含量最高,其次为热烫后的嫩芽海带,盐渍嫩芽海带最低,这可能是由于热烫高温和盐渍脱水加工过程使嫩芽海带中营养成分出现不同程度的损失。氨基酸组成分析表明,新鲜嫩芽海带更符合联合国粮食及农业组织/世界卫生组织(Food and Agricultural Organization of the United Nations/World Health Organization,FAO/WHO)推荐的理想蛋白质模式。重金属含量分析表明嫩芽海带重金属元素含量均符合国内外食品安全标准规定。主成分分析结果表明,新鲜嫩芽海带的综合得分最高,品质最佳,经过热烫和盐渍后新鲜嫩芽海带的综合营养品质有所下降。结论嫩芽海带在加工过程中经热烫和盐渍后,营养成分和矿物质均出现不同程度的损失,本研究可为嫩芽海带今后的高值化开发利用和可持续发展提供科学依据。展开更多
A novel triphenylphosphine-contained poly(ether ether ketone ketone) was synthesized from bis[4-(p-fluorobenzoyl)-phenyl]phenylphosphine oxide and hydroquinone by nucleophilic copolycondensation with sulfolane as the ...A novel triphenylphosphine-contained poly(ether ether ketone ketone) was synthesized from bis[4-(p-fluorobenzoyl)-phenyl]phenylphosphine oxide and hydroquinone by nucleophilic copolycondensation with sulfolane as the solvent. The structure was confirmed via FTIR, 31P NMR and 1H NMR. Electrical property, mechanical property, heat-resistance property, flame resistance and solubility were also evaluated. The results show that the polymer has an excellent heat-resistance, the glass transition temperature(Tg) is 212.6 ℃. The 5% mass loss of the polymer in nitrogen atmosphere took place at 476 ℃. The polymer is soluble in many organic solvents, such as CH2Cl2, CHCl3, Cl2(CH)2Cl2, Cl(CH2)2Cl, DMF, and NMP at room temperature, the polymer possesses well film ability, good mechanics property, electrical property, and the LOI is 44 which indicates that it possesses an excellent flame retardancy.展开更多
文摘目的探究嫩芽海带加工过程中不同工序对营养成分及矿物质的影响。方法本研究探究了嫩芽海带在加工过程中热烫和盐渍工序对其主要营养成分和矿物质的影响。结果新鲜嫩芽海带的水分、粗蛋白质、膳食纤维、粗脂肪、褐藻胶、甘露醇、碘、氨基酸、锰、磷、铁和钾含量最高,其次为热烫后的嫩芽海带,盐渍嫩芽海带最低,这可能是由于热烫高温和盐渍脱水加工过程使嫩芽海带中营养成分出现不同程度的损失。氨基酸组成分析表明,新鲜嫩芽海带更符合联合国粮食及农业组织/世界卫生组织(Food and Agricultural Organization of the United Nations/World Health Organization,FAO/WHO)推荐的理想蛋白质模式。重金属含量分析表明嫩芽海带重金属元素含量均符合国内外食品安全标准规定。主成分分析结果表明,新鲜嫩芽海带的综合得分最高,品质最佳,经过热烫和盐渍后新鲜嫩芽海带的综合营养品质有所下降。结论嫩芽海带在加工过程中经热烫和盐渍后,营养成分和矿物质均出现不同程度的损失,本研究可为嫩芽海带今后的高值化开发利用和可持续发展提供科学依据。
文摘A novel triphenylphosphine-contained poly(ether ether ketone ketone) was synthesized from bis[4-(p-fluorobenzoyl)-phenyl]phenylphosphine oxide and hydroquinone by nucleophilic copolycondensation with sulfolane as the solvent. The structure was confirmed via FTIR, 31P NMR and 1H NMR. Electrical property, mechanical property, heat-resistance property, flame resistance and solubility were also evaluated. The results show that the polymer has an excellent heat-resistance, the glass transition temperature(Tg) is 212.6 ℃. The 5% mass loss of the polymer in nitrogen atmosphere took place at 476 ℃. The polymer is soluble in many organic solvents, such as CH2Cl2, CHCl3, Cl2(CH)2Cl2, Cl(CH2)2Cl, DMF, and NMP at room temperature, the polymer possesses well film ability, good mechanics property, electrical property, and the LOI is 44 which indicates that it possesses an excellent flame retardancy.
