A mathematical model for extraction of red pepper seed oil with supercritical CO2was proposed.Some factors influencing the process were investigated,including operation pressure,temperature and extraction yield Xe(%)....A mathematical model for extraction of red pepper seed oil with supercritical CO2was proposed.Some factors influencing the process were investigated,including operation pressure,temperature and extraction yield Xe(%).The model was solved by the method of weighted residuals and used to simulate the process numerically.The kinetic equation is expressed as Xe16.8606exp(t/9.98177)16.95457 and the simulation results are in excellent agreement with the experimental data.The optimal operating parameters are 30 MPa,318 K and 60 min.展开更多
Chili pepper (Capsicum spp.) fruit color is an important agronomical trait. It has been known that a large deletion in the 5' upstream region of the Ccs gene generates non-red fruit color in pepper, but the accura...Chili pepper (Capsicum spp.) fruit color is an important agronomical trait. It has been known that a large deletion in the 5' upstream region of the Ccs gene generates non-red fruit color in pepper, but the accurate size and position of the deletion and whether all the non-red cultivars had the same large deletion or not were unclarified. In this study, to identify the Ccs upstream large deletion, we carried out diagnostic PCR using six forward primers at 300 - 900 bp intervals in the 5' untranslated region of Ccs with a fixed reverse primer for a yellow fruit pepper “Sonia Gold”. Then it was revealed that 4430 bp from -3234 bp position in upstream region to 1196 bp position in exon was deleted in Ccs of “Sonia Gold”. The allele having this deletion was named ccs-del. Probably this allele is substantially the same as ccs-p1 having 4879 bp deletion reported previously. Based on the sequence determined, we developed a PCR marker to distinguish ccs-del. Genotyping of 16 cultivars of C. annuum showed that 14 had ccs-del and the remaining two had another mutant allele ccs-3. This result indicates that ccs-del is the most common allele and widely shared in non-red fruit cultivars in C. annuum. Genotyping of 16 cultivars of C. chinense clarified that one cultivar each possessed ccs-del and ccs-3. These results indicate that major alleles responsible for non-red fruit color in C. annuum were shared across species throughout interspecific introgression.展开更多
为探讨1-甲基环丙烯(1-methylcyclopropene,1-MCP)对采后红椒质地的影响,以"洛椒118"淮安红椒为材料,采用质构仪质地多面分析方法、压缩测试结合相关性分析法和主成分分析法对红椒质地特性进行分析。结果表明:不同剂量1-MCP...为探讨1-甲基环丙烯(1-methylcyclopropene,1-MCP)对采后红椒质地的影响,以"洛椒118"淮安红椒为材料,采用质构仪质地多面分析方法、压缩测试结合相关性分析法和主成分分析法对红椒质地特性进行分析。结果表明:不同剂量1-MCP处理均能较好地延缓采后红椒按压力的下降,其中0.5、1.0 m L/L 1-MCP处理的作用更明显;另外,1-MCP处理可较好地保持红椒硬度、黏着性、咀嚼性、回复性等质构性能,结合主成分分析的结果,1.0 m L/L 1-MCP处理对红椒的保鲜效果较佳。展开更多
基金Supported by the Opening Foundation of Key Laboratory of Resource Biology and Biotechnology in Western China(ZS12015)the Ministry of Education and Natural Science Foundation of Education Committee of Shaanxi Province(11JK0598)the 2012 Xi’an Modern Agricultural Promotion Project(NC1207)
文摘A mathematical model for extraction of red pepper seed oil with supercritical CO2was proposed.Some factors influencing the process were investigated,including operation pressure,temperature and extraction yield Xe(%).The model was solved by the method of weighted residuals and used to simulate the process numerically.The kinetic equation is expressed as Xe16.8606exp(t/9.98177)16.95457 and the simulation results are in excellent agreement with the experimental data.The optimal operating parameters are 30 MPa,318 K and 60 min.
文摘Chili pepper (Capsicum spp.) fruit color is an important agronomical trait. It has been known that a large deletion in the 5' upstream region of the Ccs gene generates non-red fruit color in pepper, but the accurate size and position of the deletion and whether all the non-red cultivars had the same large deletion or not were unclarified. In this study, to identify the Ccs upstream large deletion, we carried out diagnostic PCR using six forward primers at 300 - 900 bp intervals in the 5' untranslated region of Ccs with a fixed reverse primer for a yellow fruit pepper “Sonia Gold”. Then it was revealed that 4430 bp from -3234 bp position in upstream region to 1196 bp position in exon was deleted in Ccs of “Sonia Gold”. The allele having this deletion was named ccs-del. Probably this allele is substantially the same as ccs-p1 having 4879 bp deletion reported previously. Based on the sequence determined, we developed a PCR marker to distinguish ccs-del. Genotyping of 16 cultivars of C. annuum showed that 14 had ccs-del and the remaining two had another mutant allele ccs-3. This result indicates that ccs-del is the most common allele and widely shared in non-red fruit cultivars in C. annuum. Genotyping of 16 cultivars of C. chinense clarified that one cultivar each possessed ccs-del and ccs-3. These results indicate that major alleles responsible for non-red fruit color in C. annuum were shared across species throughout interspecific introgression.
文摘为探讨1-甲基环丙烯(1-methylcyclopropene,1-MCP)对采后红椒质地的影响,以"洛椒118"淮安红椒为材料,采用质构仪质地多面分析方法、压缩测试结合相关性分析法和主成分分析法对红椒质地特性进行分析。结果表明:不同剂量1-MCP处理均能较好地延缓采后红椒按压力的下降,其中0.5、1.0 m L/L 1-MCP处理的作用更明显;另外,1-MCP处理可较好地保持红椒硬度、黏着性、咀嚼性、回复性等质构性能,结合主成分分析的结果,1.0 m L/L 1-MCP处理对红椒的保鲜效果较佳。
