Agricultural Sciences in China最新文献

{"title":"Activity of the Fungicide JS399-19 Against Fusarium Head Blight of Wheat and the Risk of Resistance","authors":"Yu CHEN ,&nbsp;Wen-xiang WANG ,&nbsp;Ai-fang ZHANG ,&nbsp;Chun-yan GU ,&nbsp;Ming-guo ZHOU ,&nbsp;Tong-chun GAO","doi":"10.1016/S1671-2927(11)60191-0","DOIUrl":"10.1016/S1671-2927(11)60191-0","url":null,"abstract":"<div><h3>Abstract</h3><p>This report reviews the characteristics of JS399-19, a novel cyanoacrylate fungicide. JS399-19 strongly inhibits the mycelial growth of the fungal plant pathogens of the genus <em>Fusarium</em> and exhibits great potential in controlling Fusarium head blight (FHB) on wheat and other cereals. The mode of action of JS399-19 is evidently different from that of benzimidazole (for example, carbendazim) and other sort of fungicides, making it a possible replacement for carbendazim in China to manage carbendazim-resistant subpopulations of <em>Fusarium graminearum</em> and <em>F. asiaticum.</em> JS399-19 has excellent protective and curative activity against these pathogens. Incorrect use of this fungicide, however, is likely to select for resistance. Among JS399-19-resistant mutants of <em>F. asiaticum</em> induced in the laboratory, the resistant level of mutants was high and the phenotype of resistance against JS399-19 was conferred by a major gene by genetic analysis. The fitness of laboratory-induced JS399-19-resistant mutants of <em>F. asiaticum</em> was nearly equal to that of their parents. JS399-19 lacks cross resistance with other sort fungicides. To control FHB with JS399-19 and to delay the development of the fungicide-resistance, farmers should use tank mixtures containing JS399-19 and carbendazim, metconazole, tebuconazole, or prothioconazole.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 12","pages":"Pages 1906-1913"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60191-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56763011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of Two-Dimensional Gel Electrophoresis for Kenaf Leaf Proteins","authors":"Tao CHEN,&nbsp;Jian-min QI,&nbsp;Jian-tang XU,&nbsp;Pin-pin CHEN,&nbsp;Ai-fen TAO,&nbsp;Fu-cheng CHEN,&nbsp;Wei CHEN","doi":"10.1016/S1671-2927(11)60184-3","DOIUrl":"10.1016/S1671-2927(11)60184-3","url":null,"abstract":"<div><h3>Abstract</h3><p>To establish a suitable and effective protocol of protein extraction for two-dimensional gel electrophoresis (2-DE) analysis in kenaf leaf tissues, three extraction methods (trichloroacetic acid/acetone, urea/thiourea, and phenol extraction methods) were applied to the extraction of kenaf leaf protein. The results were compared in regard to protein extraction efficiency, sodiumdodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), and 2-DE gels. Furthermore, the 2-DE system was optimized for four aspects: the pH range of IPG (immobilized pH gradient) stripes, sampling methods, sample volumes, and concentration of polyacrylamide gels. The data presented showed that the phenol extraction method is the best method to perform 2-DE analysis of kenaf leaf protein. The protein extracted from phenol extraction method reached the purity of (26.40±0.859)%, showed (25.67±1.53) protein bands in one dimension SDS-PAGE gels, and (1 374±54.44) protein spots on 2-DE gels. The research also indicates that kenaf leaf protein spots were distributed mainly within the pH range of 4-8. More clear background with a better distribution effect and many protein spots could be obtained on 2-DE gels under the conditions of active rehydration loading, 24 cm IPG strips (linear pH gradient of 4-7), 1.4 mg samples, and 12% SDS-PAGE gels.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 12","pages":"Pages 1842-1850"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60184-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Breeding Programs Combining Genomic Information in Chinese Holstein","authors":"Jun CHEN ,&nbsp;Ya-chun WANG ,&nbsp;Yi ZHANG,&nbsp;Dong-xiao SUN,&nbsp;Sheng-li ZHANG,&nbsp;Yuan ZHANG","doi":"10.1016/S1671-2927(11)60196-X","DOIUrl":"10.1016/S1671-2927(11)60196-X","url":null,"abstract":"<div><h3>Abstract</h3><p>Current study adopted gene flow theory and selection index method to compare the breeding efficiency of three breeding plans in the Chinese Holstein cattle using ZPLAN software. Simulated conventional progeny-testing program (PT) and young sire program (YS) were compared with breeding program using genomic selection (GS) taking parameters derived from Chinese Holstein breeding system. The results showed that, GS shortened generation interval by 1.5-2.2 years, and increased the genetic progress by 30-50%, comparing to PT and YS, respectively. Economic analysis showed that GS could obtain a higher breeding efficiency, being 119 and 97% higher than that of PT and YS, respectively; and GS was also powerful in improving functional traits with a low heritability. Main factors affecting breeding efficiency in GS were further discussed, including selection intensity, accuracy and the cost of SNP genotyping. Our finding provided references for future designing and implementing GS in Chinese dairy population.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 12","pages":"Pages 1949-1957"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60196-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Responses of Morphological Trait, Leaf Ultrastructure, Photosynthetic and Biochemical Performance of Tomato to Differential Light Availabilities","authors":"Qiu-shi FU ,&nbsp;Bing ZHAO ,&nbsp;Xue-wen WANG ,&nbsp;Yu-jue WANG ,&nbsp;Shu-xin REN ,&nbsp;Yang-dong GUO","doi":"10.1016/S1671-2927(11)60189-2","DOIUrl":"10.1016/S1671-2927(11)60189-2","url":null,"abstract":"<div><h3>Abstract</h3><p>The whole-plant morphology, leaf ultrastructure, photosynthesis as well as enzyme activities of two tomato cultivars (Meifen-2 and Hongsheng) to differential light availabilities (450-500 μmol m⁻² s⁻¹, 75-100 μmol m⁻² s⁻¹) were examined in controlled environment. The results showed that the plant biomass and root/shoot ratio decreased and the specific leaf area increased significantly under the low light condition. There was a significant increase in malondialdehyde (MDA) concentration, superoxide dismutase (SOD) and peroxidase (POD) activities and decrease in soluble sugar and protein contents in LL-grown plants. For both cultivars, downregulation of photosynthesis and electron transport components were observed in LL-grown plants, the inhibition of the photosynthesis under the LL condition could be partially explained by the decrease of stomata density and by the changes of chloroplast.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 12","pages":"Pages 1887-1897"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60189-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of the Spatial Coupling of Water and Fertilizer on the Chlorophyll Fluorescence Parameters of Winter Wheat Leaves","authors":"Yu-fang SHEN,&nbsp;Shi-qing LI","doi":"10.1016/S1671-2927(11)60193-4","DOIUrl":"10.1016/S1671-2927(11)60193-4","url":null,"abstract":"<div><h3>Abstract</h3><p>Wheat is an important agricultural crop in the Loess region of China, where there is drought stress and low availability of soil nitrogen and phosphorus. Using a pulse modulation fluorometer, we studied the effects of water, nitrogen, and phosphorus on the kinetic parameters of chlorophyll fluorescence in winter wheat. The wheat was grown in layered columns of Eum-Orthic Anthrosol (Cinnamon soil), with the water content and nutrient composition of each layer controlled. The results showed that the kinetic parameters of chlorophyll fluorescence were sensitive to water stress. The basic fluorescence (F₀) of leaves was higher in the dry treatment (0-30 cm layer at 40-45% of field capacity, 30-90 cm at 75-80% of field capacity) compared to the wet treatment (entire soil column at 75-80% of field capacity). The maximal fluorescence (F_m), the variable fluorescence (F_v), the photochemical efficiency (F_v/F_m) and potential activites (F_v/F₀) of photosystem 2 (PS2) were significantly lower in the dry treatment. Although drought stress impaired PS2 function, this effect was significantly ameliorated by applying P or NP fertilizer, but not N alone. P application increased F_v/F_m, both in well-watered and water stressed plants, especially when fertilizer was applied throughout the column or within the top 30 cm of soil. A combined fertilizer improved photosynthesis in well watered plants, with F_m and F_v/F_m being the highest when fertilizer was applied throughout the columns. For drought stressed, plants F_v/F_m was significantly greater when combined fertilizer was added within the top 30 cm of soil. We concluded that, when growing winter wheat in both arid and semi-arid parts of the Loess region of China, it is important to guarantee the nutrient supply in the top 30 cm of the soil.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 12","pages":"Pages 1923-1931"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60193-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56763097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cloning and Characterization of WOX4 Gene from Vitis vinifera L. Involved in Stem Cell Regulation","authors":"Ru DAI ,&nbsp;Hai-peng JIN ,&nbsp;Zeng WANG ,&nbsp;Perl Avihai ,&nbsp;Hai-ying XU ,&nbsp;Wen ZHANG ,&nbsp;Shang-wu CHEN ,&nbsp;Hui-qin MA","doi":"10.1016/S1671-2927(11)60186-7","DOIUrl":"10.1016/S1671-2927(11)60186-7","url":null,"abstract":"<div><h3>Abstract</h3><p><em>Wuschel</em>-related homeobox <em>(WOX)</em> genes play essential, specific, and sometimes redundant roles in plant embryo development, shoot and root meristem maintenance, and plant development. Though much information was quickly gained with members of the <em>WOX</em> gene family of <em>Arabidopsis,</em> monocotyledonous crops, and gymnospermous conifers, little is known about perennial woody plants. In this study, we isolated the first <em>WOX</em> gene family member from grape <em>(Vitis vinifera</em> L. <em>cv.</em> Cabernet Sauvignon), and named it <em>VvWOX4</em> based on its characteristic domains and phylogenetic analysis. The identity of <em>VvWOX4</em> was validated by MALDI-TOF MS and Western blot with polyclonal antibody against <em>Arabidopsis thaliana</em> Wuschel. Functional analysis showed that <em>VvWOX4</em> markedly increased shoot primordia structures when overexpressed under CaMV 35S promoter in tobacco. A different expression pattern was found for <em>VvVOX4</em> compared with <em>AtWUCHEL</em> and its expression was detected in unique organs of grapevines. Besides the expression in the vegetative shoot apical meristem (SAM) of grape shoot tips, <em>VvWOX4</em> is expressed in dormant winter buds, inflorescence, young leaves, and tendril tips, but not in root tips. In young leaves, the expression of <em>VvWOX4</em> is strongly upregulated by wounding, and also by plant growth regulators such as 2 mg L⁻¹ 2,4-D, 1 mg L⁻¹ NAA and 1 mg L⁻¹ BAP treatments, while downregulation was monitored by 1 mg L⁻¹ IBA treatment, and there was no response to 0.5 mg L⁻¹ GA3 treatment. Together, our results revealed the first member of grape <em>WOX</em> gene family and indicated different roles and regulation of <em>VvWOX4</em> in the perennial woody crop grapevine.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 12","pages":"Pages 1861-1871"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60186-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pharmacokinetics of Mequindox and Its Metabolites in Swine","authors":"Yi-ming LIU ,&nbsp;Ying-chun LIU ,&nbsp;Huan-zhong DING ,&nbsp;Bing-hu FANG ,&nbsp;Fan YANG ,&nbsp;Qi SHAN ,&nbsp;Zhen-ling ZENG","doi":"10.1016/S1671-2927(11)60198-3","DOIUrl":"10.1016/S1671-2927(11)60198-3","url":null,"abstract":"<div><h3>Abstract</h3><p>The present study was carried out to investigate the pharmacokinetics of mequindox (MEQ), a new synthetic quinoxaline 1,4-dioxide derivative and its two main metabolites M1 [2-isoethanol mequinoox], M2 [2-isoethanol 1-desoxymequindox] in healthy swine. MEQ (10 mg kg⁻¹ body weight) was administered to nine healthy cross-bread swine <em>via</em> oral, intramuscular, and intravenous routes in a randomized 3×3 crossover design with a 1-wk washout period. A sensitive high-performance liquid chromatography (HPLC) method was used for the determination of plasma concentrations of MEQ and its metabolites M1 and M2. Plasma concentration versus time profiles of MEQ and its metabolites, M1 and M2, were analyzed by non-compartmental analysis using WinNonlin 5.2 software. The mean maximum concentrations (C_max) of M1 and M2 after intravenous administration of MEQ were (5.27±1.59) μg mL⁻¹ at 1.78 h and (1.01±0.29) μg mL⁻¹ at 0.92 h, respectively. The mean maximum concentrations (C_max) of MEQ, M1, and M2 were found to be (6.96±3.23), (6.61±1.56), and (0.78 ±0.25) μg mL⁻¹, respectively at 0.15, 1.61, and 1.30 h after intramuscular administration of MEQ, respectively and (0.75±0.45), (6.90±1.52), and (0.62±0.21) μg mL⁻¹, respectively at 0.40, 1.57, and 2.00 h, respectively after oral administration of MEQ. The apparent elimination half-lives (t_1/2) of MEQ, M1, and M2 were (0.84±0.35), (7.57±3.93), and (9.56±6.00) h, respectively after intravenous administration of MEQ; (0.50±0.25), (6.30±3.00), and (5.94±2.54) h, respectively after intramuscular administration of MEQ; and (1.64±1.17), (5.59±1.93), and (16.25±10.27) h, respectively after oral administration of MEQ. The mean areas under the plasma concentration-time curve (AUC_0- of MEQ, M1, and M2 were (4.88±1.54), (36.93±17.50), and (5.16±1.94) μg h mL-¹, respectively after intravenous administration of MEQ; (4.18±0.76), (48.25±20.82), and (4.88±2.21) μg h mL⁻¹, respectively after intramuscular administration of MEQ; and (1.01±0.40), (48.83±20.71), and (5.54±2.23) μg h mL⁻¹, respectively after oral administration of MEQ. MEQ was rapidly absorbed and metabolized in swine after oral, intramuscular, and intravenous administration. Further studies are required to investigate the double-peak phenomenon observed in the plasma concentration-time profile after oral administration and the pharmacokinetics of other metabolites of MEQ.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 12","pages":"Pages 1968-1976"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60198-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Photoperiod on Alternative Respiration Pathway in Nectarine Flower Buds During Dormancy Induction","authors":"Dong-mei LI ,&nbsp;Yue TAN ,&nbsp;Qin YU ,&nbsp;Xiu-de CHEN ,&nbsp;Ling LI ,&nbsp;Hai-sen ZHANG ,&nbsp;Dong-sheng GAO","doi":"10.1016/S1671-2927(11)60188-0","DOIUrl":"10.1016/S1671-2927(11)60188-0","url":null,"abstract":"<div><h3>Abstract</h3><p>Characteristics of dormancy induction and alternative respiration pathway (also known as cyanide-resistant respiration) of nectarine flower buds in different photoperiods were studied to determine the function of photoperiod and alternative respiration pathway in dormancy induction. Oxygen-electrode system and respiratory inhibitors were used to measure total respiratory rates and rates of alternative respiration pathway. The results showed that total respiration rate (V_t) in flower buds showed to be double hump-shaped curves. Short day raised, brought the first-hump of V_t forward and delayed the second-hump, while long day delayed the whole curve. The capacity (V_alt) and activity (ρV_alt) of SD and LD changed synchronously and both showed to be double hump-shaped curves. Short day made the first climax of V_alt and pV_alt existed much earlier, while long day increased their rates significantly. The length of day had little effects on the later period climax. Long day also increased the contributions of alternative respiration pathway in total respiration rate (ρV_alt/V_t). The changes in alternative respiration pathway were correlated with the induction of dormancy and adjusted by photoperiod. Short day promoted dormancy induction of nectarine trees, while long day delayed it.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 12","pages":"Pages 1881-1886"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60188-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Long-Term Fertilization on the Distribution of Carbon, Nitrogen and Phosphorus in Water-Stable Aggregates in Paddy Soil","authors":"Wei WANG ,&nbsp;Wei-cai CHEN ,&nbsp;Kai-rong WANG ,&nbsp;Xiao-li XIE ,&nbsp;Chun-mei YIN ,&nbsp;An-lei CHEN","doi":"10.1016/S1671-2927(11)60194-6","DOIUrl":"10.1016/S1671-2927(11)60194-6","url":null,"abstract":"<div><h3>Abstract</h3><p>We investigated the size distribution of water-stable aggregates and the soil carbon, nitrogen and phosphorus concentration over aggregate size fractions based on a long-term (1990-2006) fertilization experiment in a reddish paddy soil. The results showed that the largest water-stable aggregate (WSA) (&gt;5 mm) and the smallest WSA (&lt;0.25 mm) took up the first largest proportion (38.3%) and the second largest proportion (23.3%), respectively. Application of organic materials increased the proportion of the large WSA (&gt;2 mm) and decreased the proportion of the small WSA (&lt;1 mm), resulting in an increase in the mean weight diameter of WSA, whereas application of chemical fertilizer had little effect. Application of organic materials, especially combined with chemical fertilizers, increased total carbon, nitrogen and phosphorus concentrations in all sizes of WSA, and total carbon, nitrogen and phosphorus were prone to concentrate in the large WSA. Further more, application of organic materials improved the supply effectiveness of available phosphorus, whereas had little influence on the labile carbon in WSA. Application of chemical fertilizers improved concentrations of total and available phosphorus in all sizes of WSA, whereas had little influence on total carbon and nitrogen contents. Economical fertilization model maintained the soil fertility when compared with full dose of chemical fertilizers, indicating that using organic materials could reduce chemical fertilizers by about one third.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 12","pages":"Pages 1932-1940"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60194-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal Degradation Kinetics of Anthocyanins and Visual Color of Blood Orange Juice","authors":"Shao-qian CAO ,&nbsp;Liang LIU ,&nbsp;Si-yi PAN","doi":"10.1016/S1671-2927(11)60201-0","DOIUrl":"10.1016/S1671-2927(11)60201-0","url":null,"abstract":"<div><h3>Abstract</h3><p>Thermal degradation kinetics of anthocyanins and visual color (Hunter a* value) of blood orange juice were studied at selected temperatures (70-90°C). Results indicated that both the thermal degradation of anthocyanin and visual color all followed first-order reaction kinetics, and they could be expressed by Arrhenius equation. The activation energy values for the anthocyanins degradation and visual color degradation were 55.81 and 47.51 kJ mol⁻¹, respectively. The linear relationship between visual color and anthocyanin content was obtained. Furthermore, during thermal processing of blood orange juice, the formulas about the linear relationships showed no significant difference at selected temperatures. So, the relationships between visual color and anthocyanins content during thermal processing at selected temperatures could be described by the same equation: a*/a₀*=0.559(C/C₀)+0.43. It might be inferred that visual color measured instantaneously by tristimulus colorimeters for on-line quality control, could be used to predict the anthocyanins degradation during thermal processing of blood orange juice.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 12","pages":"Pages 1992-1997"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60201-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}