Stalk length affects the mineral distribution and floret quality of broccoli (Brassica oleracea L. var. italica) heads during storage
Stalk length affects the mineral distribution and floret quality of broccoli (Brassica oleracea L. var. italica) heads during storage
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DOI：
10.1016/j.postharvbio.2018.07.003
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发表时间：
2018-11-01
影响因子：
7
通讯作者：
Li, Yanjie
中科院分区：
文献类型：
--
作者：
Guo, Yanyin;Wang, Liang;Li, Yanjie
西兰花茎的营养成分几乎与西兰花头的小花相同，但它们通常在家庭使用或工业加工中被丢弃。此外，关于茎长度对西兰花头的储存特性的影响的信息很少。本研究测定了1 cm、3 cm、6 cm、9 cm等不同茎长度对10℃贮藏期间西兰花茎和花中N、P、K、Ca、Mg、Fe、Zn、B等矿物质含量的影响。还测量了西兰花小花的叶绿素和抗坏血酸含量，以确定西兰花头的采后质量。结果表明，茎长显着影响西兰花贮藏过程中矿物质含量及其在茎和花中的分布。非常短（1 厘米）或非常长（9 厘米）的茎长度对储存期间西兰花小花的质量产生不利影响。合适的茎长度（6厘米）保持了贮藏过程中花茎之间矿物质含量和营养成分的平衡，保证了作为代谢中心的西兰花小花在较长的贮藏过程中具有更好的采后品质。为了提高西兰花头的储存质量，应考虑茎的长度。
Broccoli stalks have almost the equivalent nutrient components as the florets of the broccoli head but they are usually discarded in home use or industrial processing. Moreover, little information is available regarding the effects of stalk length on the storage characteristics of broccoli heads. In this study, the effects of different stalk lengths, i.e., 1 cm, 3 cm, 6 cm, and 9 cm on the mineral content including N, P, K, Ca, Mg, Fe, Zn, and B of the stalks and florets of broccoli heads during storage at 10 degrees C were determined. The chlorophyll and ascorbic acid contents of the broccoli florets were also measured for determining the postharvest quality of the broccoli heads. The results showed that the stalk length significantly affected the mineral content and the distribution in the stalks and florets of broccoli heads during storage. Very short (1 cm) or very long (9 cm) stalk lengths had adverse effects on the broccoli floret quality during storage. A suitable stalk length (6 cm) maintained a balance in the mineral content and the nutritional content between the florets and stalks during storage and ensured that the broccoli florets, which are the metabolism center, had better postharvest quality during longer storage periods. The stalk length should be considered for better storage quality of the broccoli heads.