为研究食盐浓度对酸笋接种发酵过程的影响,采用柠檬明串珠菌和植物乳杆菌作为混合发酵剂,在不同食盐浓度(0%、1%、3%、5%)条件下发酵制备酸笋。对发酵过程中的乳酸菌、pH、总酸、乳酸、乙酸和亚硝酸盐含量变化进行研究。结果表明,在发...为研究食盐浓度对酸笋接种发酵过程的影响,采用柠檬明串珠菌和植物乳杆菌作为混合发酵剂,在不同食盐浓度(0%、1%、3%、5%)条件下发酵制备酸笋。对发酵过程中的乳酸菌、pH、总酸、乳酸、乙酸和亚硝酸盐含量变化进行研究。结果表明,在发酵过程中,1%食盐浓度时乳酸菌数峰值最高(9.65 lg CFU/mL);发酵120 h时,各食盐浓度组的乳酸菌数量稳定在7.00~7.79 lg CFU/mL之间,pH稳定在3.15~3.39之间,总酸稳定在5.3~6.6 g/L之间;发酵结束时,1%食盐浓度的酸笋中乳酸浓度最高(5.23 g/L),乙酸含量呈先升高后降低趋势;发酵过程中,亚硝酸盐含量峰值的食盐浓度由大到小依次为0%>1%>3%>5%,发酵120 h时,最终亚硝酸盐含量为3.45~3.90 mg/L,均低于国家标准规定的最大限度。因此,添加1%的食盐有利于酸笋发酵。展开更多
从明清时期至今,佛山的工商业一直在内外部环境的变迁中不断调整与适应。传统手工制造业在近现代历史进程中不断革新、发展,改革开放后更是实现了快速发展,形成了以家电、陶瓷、纺织等为代表的现代制造体系。进入21世纪以来通过产业升...从明清时期至今,佛山的工商业一直在内外部环境的变迁中不断调整与适应。传统手工制造业在近现代历史进程中不断革新、发展,改革开放后更是实现了快速发展,形成了以家电、陶瓷、纺织等为代表的现代制造体系。进入21世纪以来通过产业升级和区域经济一体化进一步提升其竞争力。佛山作为珠江三角洲的重要工商业城市,其发展历程不仅反映了地方经济的变迁,也折射出中国工商业发展的时代特征。From 1840 to the present, Foshan’s industry and commerce have been constantly adjusting and adapting to the changes in the internal and external environment. The traditional handicraft manufacturing industry has been constantly innovating and developing in the course of modern history, and has achieved rapid development after the reform and opening-up, forming a modern manufacturing system represented by household appliances, ceramics, textiles, etc. Since the beginning of the 21st century, its competitiveness has been further enhanced through industrial upgrading and regional economic integration. As an important industrial and commercial city in the Pearl River Delta, Foshan’s development history not only reflects the changes of the local economy, but also reflects the characteristics of China’s industrial and commercial development.展开更多
文摘为研究食盐浓度对酸笋接种发酵过程的影响,采用柠檬明串珠菌和植物乳杆菌作为混合发酵剂,在不同食盐浓度(0%、1%、3%、5%)条件下发酵制备酸笋。对发酵过程中的乳酸菌、pH、总酸、乳酸、乙酸和亚硝酸盐含量变化进行研究。结果表明,在发酵过程中,1%食盐浓度时乳酸菌数峰值最高(9.65 lg CFU/mL);发酵120 h时,各食盐浓度组的乳酸菌数量稳定在7.00~7.79 lg CFU/mL之间,pH稳定在3.15~3.39之间,总酸稳定在5.3~6.6 g/L之间;发酵结束时,1%食盐浓度的酸笋中乳酸浓度最高(5.23 g/L),乙酸含量呈先升高后降低趋势;发酵过程中,亚硝酸盐含量峰值的食盐浓度由大到小依次为0%>1%>3%>5%,发酵120 h时,最终亚硝酸盐含量为3.45~3.90 mg/L,均低于国家标准规定的最大限度。因此,添加1%的食盐有利于酸笋发酵。
文摘从明清时期至今,佛山的工商业一直在内外部环境的变迁中不断调整与适应。传统手工制造业在近现代历史进程中不断革新、发展,改革开放后更是实现了快速发展,形成了以家电、陶瓷、纺织等为代表的现代制造体系。进入21世纪以来通过产业升级和区域经济一体化进一步提升其竞争力。佛山作为珠江三角洲的重要工商业城市,其发展历程不仅反映了地方经济的变迁,也折射出中国工商业发展的时代特征。From 1840 to the present, Foshan’s industry and commerce have been constantly adjusting and adapting to the changes in the internal and external environment. The traditional handicraft manufacturing industry has been constantly innovating and developing in the course of modern history, and has achieved rapid development after the reform and opening-up, forming a modern manufacturing system represented by household appliances, ceramics, textiles, etc. Since the beginning of the 21st century, its competitiveness has been further enhanced through industrial upgrading and regional economic integration. As an important industrial and commercial city in the Pearl River Delta, Foshan’s development history not only reflects the changes of the local economy, but also reflects the characteristics of China’s industrial and commercial development.
