许多已发表的研究强调了用于在全球各种柑橘基因型上保持维生素C含量的持续时间和储存温度的差异。本研究旨在分析柑橘基因型对维生素C含量的影响。持续时间,使用荟萃分析方法和储存温度。数据搜索,选择,和制表产生了一个综合数据库,该数据库由54项单独研究收集的1412个数据点构成,遵循PRISMA-P准则。维生素C含量差异很大,柑橘类水果的全部数据范围为0至76.2mg/100mL。Meta分析结果表明,贮藏时间显著影响柑橘类水果中维生素C的含量。具体来说,对于葡萄柚,普通话,橙色,贮藏时间对其维生素C水平有显著影响(P<0.01),随着时间的推移观察到持续的下降。葡萄柚的相关系数(R2)为0.63,普通话为0.9,橙色为0.69。相比之下,就储存时间的影响而言,杂种和石灰柑橘之间的维生素C水平没有显着差异。然而,其他结果表明,储存温度对柑橘和杂交品种的维生素C水平变化有显着影响(P<0.001)。根据基因型,橘子的维生素C含量明显低于其他品种,在16.9毫克/100毫升,维生素C范围为13.2至20.9mg/100mL(P<0.001)。维生素C含量最高的是柠檬和杂交品种,大约65.5(范围59.3-76.2)和48.3(范围29.6-75.5),分别,均以mg/100mL为单位(P<0.001)。此外,维生素C浓度有下降的趋势,由于温度(P=0.078),而柑橘品种经历了减少,虽然不重要。将柑橘类水果中维生素C损失降至最低的理想温度(15°C)和储存时间(56天)处于最佳状态。总之,柑橘类水果中维生素C的变质受温度和储存时间的影响,其含量也受到柑橘品种的影响。
Numerous published studies have highlighted discrepancies in the duration and storage temperature used for preserving vitamin C content on various citrus genotypes worldwide. The present study aimed to analyze the variation in vitamin C content as influenced by citrus genotype, duration, and storage temperature using meta-analysis approaches. Data searching, selection, and tabulation resulted in a comprehensive database constructed from 1412 data points gathered from 54 individual studies, following PRISMA-P guidelines. The vitamin C content varied widely, ranging from 0 to 76.2 mg/100 mL in whole data of citrus fruit. Meta-analysis findings revealed that the duration of storage significantly impacted the vitamin C content in citrus fruits. Specifically, for grapefruit, mandarin, and orange, the length of storage significantly influenced their vitamin C levels (P < 0.01), with a consistent decrease observed over time. The correlation coefficients (R2) were 0.63 for grapefruit, 0.9 for mandarin, and 0.69 for orange. In contrast, no significant difference was found in terms of vitamin C levels between hybrid and lime citrus concerning the impact of storage time. However, other results indicated a significant influence of storage temperature on the variation in vitamin C levels for both citrus and hybrid varieties (P < 0.001). Depending on the genotype, tangerine had significantly lower vitamin C content compared to other varieties, at 16.9 mg/100 mL, with vitamin C ranging from 13.2 to 20.9 mg/100 mL (P < 0.001). The highest vitamin C content was found in lemon and hybrid varieties, around 65.5 (range 59.3-76.2) and 48.3 (range 29.6-75.5), respectively, all in mg/100 mL (P < 0.001). Furthermore, there was a tendency for decreasing vitamin C concentration due to temperature (P = 0.078), while citrus variety experienced a decrease, although not significant. The ideal temperature (15 °C) and duration of storage (56 days) to minimize vitamin C loss in citrus fruits are at their optimum point. In conclusion, the deterioration of vitamin C in citrus fruits is influenced by both temperature and storage duration, and its content is also impacted by the variety of citrus.