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苹果中硬度、糖酸度、叶绿素A检测产品配置单(光合仪) 【刊物发表】

  • 应用领域: 食品/饮料
  • 检测样品: 蔬菜、水果及制品
  • 检测项目:理化分析
  • 浏览次数:18 次
  • 下载次数:5 次
  • 发布时间:2019-06-05
  • 参考标准:
利用动态可调气氛控制技术(DCA)和1-MCP两种方法用于帝王苹果采后贮藏品质研究,得出结论在低氧条件下更利于样品的贮藏保鲜,苹果品质更优
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  • 参考报价

Abstract.

The objective of this study was to investigate the effects of low-oxygen storage and 1-methylcyclopropene (1-MCP) on disorders and quality of ‘Empire’ apples. For 2 years, ‘Empire’ apples were obtained from commercial orchards during their harvesting period. After cooling overnight at 3 8C, the apples were treated with or without 1-MCP (1 mL·LL1) for 24 hours and subsequently stored in controlled atmosphere (CA) with 2.5
kPa O2 (+2 kPa CO2) or 1.5 kPa O2 (+1.2 kPa CO2) for 8 months at 1.5 and 3 8C for the first and second year, respectively. In the second year, a third group of the ‘Empire’ apples was also held in respiratory quotient (RQ)-based dynamic CA storage (SafePod)  that reached 0.6 kPa O2 (+0.5 kPa CO2), and half of these apples were treated with 1-MCP (1mL·LL1) for 24 hours at 3 8C upon removal after 8 months. All apples were then
evaluated for disorders and quality after 1, 7, or 14 days at room temperature (RT, 23 to 24 8C). Substantial external CO2 injury, flesh browning, and core browning (up to 38% incidence) developed in ‘Empire’ stored in 2.5 and 1.5 kPa O2 during both years of study. Storage in 1.5 kPa O2 reduced flesh browning in the first year and core browning during the second year in apples without 1-MCP, as compared to storage in 2.5 kPa O2. 1-MCPtreated
apples stored in 2.5 or 1.5 kPa O2 had higher overall incidence of disorders than similar fruit without 1-MCP. In contrast, there was negligible incidence (0% to 1%) of these disorders in ‘Empire’ apples held in 0.6 kPa O2, regardless of 1-MCP treatment upon removal. Storage in 0.6 kPa O2 also resulted in the greatest fruit firmness retention while at RT for 14 days. This regime can provide flexibility to postpone 1-MCP treatment
until after storage, to prevent increased susceptibility to disorders during storage, without compromising fruit quality. However, results from the RQ-based dynamic CA with 0.6 kPa O2 were from a single season, and further research is needed to confirm these observations.

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