中国农业科学Issue(14)：2818-2826,9.DOI:10.3864/j.issn.0578-1752.2015.14.013
真空与乳酸钙处理对双孢蘑菇采后贮藏品质的影响
Effects of Calcium Salts Based on Vacuum Infiltration on Quality of PostharvestAgaricus bisporus
摘要
Abstract
Objective]This study is aimed at investigating the effect of concentration of calcium lactate solution on the physiological and biochemical quality during postharvest ofAgaricus bisporus by using the technology of vacuum infiltration and its optimization, so as to provide the guidance for storage conditions, a theoretical basis for postharvest loss and application of techniques for storage ofAgaricus bisporus.[Method] The mushroom ofA. bisporus variety ‘4607’ were stored at (2±1)℃ and the effect of concentration of calcium lactate solution (0.016, 0.032, 0.048 and 0.064 mol·L-1), vacuum degree (0.01, 0.03, 0.05, 0.07 and 0.09 MPa) and processing time (0.5, 1, 2, 3 and 5 min) were determined as a single factor on the effect of browning degree. At the same time, processing conditions were optimized for orthogonality, and physiological and biochemical quality changes were obtained during storage ofA. bisporusby using chromatic meter, CO2 analyzer and other equipments.[Result]Under the condition of a single factor, the appropriate concentration of calcium lactate solution was 0.032 mol·L-1 and 0.048 mol·L-1, the vacuum degree was 0.05 MPa, and the processing time was 1-2 min. The best condition of orthogonal optimization was 0.048 mol·L-1 calcium lactate solution, 0.05 MPa vacuum degree and 2 min vacuum processing time. During storage of orthogonal optimization, compared with the control group,A.bisporus in the calcium lactate treatment group and calcium lactate vacuum infiltration group could be effectively alleviated in physiological and biochemical index change and kept in good quality. However, for some indexes, calcium lactate vacuum infiltration group was significantly better than that of calcium lactate processing group. Compared with calcium lactate treatment group, during storage of 0-9 d, there was no significant difference in decrease of whiteness values between two groups (P>0.05), and effect of calcium lactate vacuum infiltration treatment was obviously better than that of calcium lactate treatment group from 9 to 15 d (P<0.05). Both the treatment groups ofA. bisporus reached respiratory peak in 6 d, the breath peak was postponed for 3 d, and calcium lactate vacuum infiltration treatment was lower than that of calcium lactate group (P<0.05). Weight loss rate of calcium lactate vacuum infiltration group was lower than that of calcium lactate treatment group, but there was no significant difference (P>0.05). Cap opening rate of both the treatment groups increased significantly and began to open respectively, delayed cap opening rate during storage of 6 d. During 6-15 d, calcium lactate vacuum infiltration treatment group was significantly lower than that of calcium lactate treatment group (P<0.05). Both the treatment groups could effectively restrain the increase of membrane permeability, and calcium lactate vacuum infiltration treatment group remained better than that of calcium lactate during 3-15 d (P<0.05). Malondialdehyde accumulation of calcium lactate vacuum infiltration treatment group was at a lower level, and also was lower than that of calcium lactate treatment group (P<0.05). There was no significant difference in PPO activity between the two treatment groups (P>0.05) from 0 to 6 d, and significantly different during 6-15 d (P<0.05).[Conclusion]Calcium lactate vacuum infiltration treatment could retain whiteness better, inhibit respiration intensity, open umbrella rate and weight loss rate, and reduce the cell membrane permeability, MDA accumulation and PPO activity. Vacuum infiltration technology can be used as an auxiliary method inA. bisporus preservation, and can better keep the storage quality of agaricus bisporus.关键词
双孢蘑菇/乳酸钙/真空渗透/贮藏/品质Key words
Agaricus bisporus/calcium lactate/vacuum infiltration/storage/qualities引用本文复制引用
陈丽娟,王赵改,杨慧,张乐,王晓敏,史冠莹..真空与乳酸钙处理对双孢蘑菇采后贮藏品质的影响[J].中国农业科学,2015,(14):2818-2826,9.基金项目
国家自然科学基金（31101373）、河南省成果转化项目 （）
