The navel orange were cleaned and pulverized by a wet superfine grinding and a broken wall cooking machine,then the navel orange whole fruit pulp were obtained by wet superfine grinding once,wet superfine grinding twi...The navel orange were cleaned and pulverized by a wet superfine grinding and a broken wall cooking machine,then the navel orange whole fruit pulp were obtained by wet superfine grinding once,wet superfine grinding twice,and broken wall cooking machine processing.The particle size distribution,free polyphenols,bound polyphenols and antioxidant activity of whole fruit pulp prepared by the three kinds of pulverization methods were discussed.The results showed that the particle size distribution of the whole fruit pulp by wet superfine grinding was more concentrated compared with the broken-wall cooking machine processing,and the total phenols dissolution rate of the navel orange whole pulp was increased by 6.9%,and the total flavonoid dissolution rate was increased by 13.5%.The results also suggested that wet superfine grinding twice could improve 1,1-diphenyl-2-picrylhydrazyl(DPPH)free radical scavenging activity of polyphenols in the whole fruit pulp,wet superfine grinding once and wet superfine grinding twice also could obviously enhance the reducing power and iron reduction ability of polyphenols in the whole fruit pulp.In conclusion,wet superfine grinding could increase both the polyphenol content and antioxidant activity of navel orange whole fruit pulp,it can be used as a pretreatment processing method for preparing navel orange whole fruit pulp.展开更多
以新鲜苦瓜为原料,研究40、50和60℃热风干燥后,苦瓜片干燥特性及理化品质的变化。结果表明:热风温度显著影响苦瓜片的干燥特性,热风温度越高,苦瓜片干燥速率越大,干燥时间越短,水分有效扩散系数增大;40~60℃热风干燥后苦瓜片的活化能为...以新鲜苦瓜为原料,研究40、50和60℃热风干燥后,苦瓜片干燥特性及理化品质的变化。结果表明:热风温度显著影响苦瓜片的干燥特性,热风温度越高,苦瓜片干燥速率越大,干燥时间越短,水分有效扩散系数增大;40~60℃热风干燥后苦瓜片的活化能为14.40 k J/mol;其中,60℃热风干燥处理时间较短,且干制苦瓜片的复水比大、褐变度低、总酚和总黄酮含量高、DPPH·清除能力强。因此,60℃为苦瓜片热风干燥的最适温度。展开更多
以Web of Science中果蔬贮藏加工与质量安全领域的文献数据为基础,采用文献计量法从逐年发文数量、高发文机构、来源国家/地区、高发文出版物、高被引论文、研究前沿与热点等方面对该领域发展态势进行分析,结果表明:近10 a来学界对果蔬...以Web of Science中果蔬贮藏加工与质量安全领域的文献数据为基础,采用文献计量法从逐年发文数量、高发文机构、来源国家/地区、高发文出版物、高被引论文、研究前沿与热点等方面对该领域发展态势进行分析,结果表明:近10 a来学界对果蔬贮藏加工与质量安全研究领域保持着较高的关注度,发文数量呈现稳步上升的趋势,10 a间文献数量增加了102.69%,发展态势良好;其中,抗氧化研究和果蔬加工技术研究是热点,而抗氧化研究主要集中在多酚类物质、类黄酮、白藜芦醇等方面;同时,果蔬副产物提取与营养功能研究也具有良好的发展前景。展开更多
基金Supported by National Key R&D Program(2017YFD0400701)~~
文摘The navel orange were cleaned and pulverized by a wet superfine grinding and a broken wall cooking machine,then the navel orange whole fruit pulp were obtained by wet superfine grinding once,wet superfine grinding twice,and broken wall cooking machine processing.The particle size distribution,free polyphenols,bound polyphenols and antioxidant activity of whole fruit pulp prepared by the three kinds of pulverization methods were discussed.The results showed that the particle size distribution of the whole fruit pulp by wet superfine grinding was more concentrated compared with the broken-wall cooking machine processing,and the total phenols dissolution rate of the navel orange whole pulp was increased by 6.9%,and the total flavonoid dissolution rate was increased by 13.5%.The results also suggested that wet superfine grinding twice could improve 1,1-diphenyl-2-picrylhydrazyl(DPPH)free radical scavenging activity of polyphenols in the whole fruit pulp,wet superfine grinding once and wet superfine grinding twice also could obviously enhance the reducing power and iron reduction ability of polyphenols in the whole fruit pulp.In conclusion,wet superfine grinding could increase both the polyphenol content and antioxidant activity of navel orange whole fruit pulp,it can be used as a pretreatment processing method for preparing navel orange whole fruit pulp.
文摘以新鲜苦瓜为原料,研究40、50和60℃热风干燥后,苦瓜片干燥特性及理化品质的变化。结果表明:热风温度显著影响苦瓜片的干燥特性,热风温度越高,苦瓜片干燥速率越大,干燥时间越短,水分有效扩散系数增大;40~60℃热风干燥后苦瓜片的活化能为14.40 k J/mol;其中,60℃热风干燥处理时间较短,且干制苦瓜片的复水比大、褐变度低、总酚和总黄酮含量高、DPPH·清除能力强。因此,60℃为苦瓜片热风干燥的最适温度。
文摘以Web of Science中果蔬贮藏加工与质量安全领域的文献数据为基础,采用文献计量法从逐年发文数量、高发文机构、来源国家/地区、高发文出版物、高被引论文、研究前沿与热点等方面对该领域发展态势进行分析,结果表明:近10 a来学界对果蔬贮藏加工与质量安全研究领域保持着较高的关注度,发文数量呈现稳步上升的趋势,10 a间文献数量增加了102.69%,发展态势良好;其中,抗氧化研究和果蔬加工技术研究是热点,而抗氧化研究主要集中在多酚类物质、类黄酮、白藜芦醇等方面;同时,果蔬副产物提取与营养功能研究也具有良好的发展前景。
