Relationships between nutrients and sucrose concentrations in sugarcane juice and use of juice analysis for nutrient diagnosis in Japan
Relationships between nutrients and sucrose concentrations in sugarcane juice and use of juice analysis for nutrient diagnosis in Japan
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日本甘蔗汁中营养素与蔗糖浓度之间的关系以及果汁分析在营养诊断中的应用
DOI：
10.1080/1343943x.2015.1128106
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Y. Kawamitsu
中科院分区：
文献类型：
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作者：
K. Watanabe;M. Nakabaru;E. Taira;M. Ueno;Y. Kawamitsu
甘蔗是日本西南部重要的经济作物，但其产量正在下降。提高食糖产量，必须提高甘蔗产量和品质。肥料管理是影响甘蔗品质的因素之一。因此，我们关注甘蔗汁中的营养成分，并试图找出影响甘蔗品质的关键因素。我们从 2013 年至 2015 年从日本所有糖厂收集了甘蔗样本，并研究了果汁营养成分与蔗糖浓度之间的关系。超过 3 年的果汁分析表明，钾 (K+) 和氯 (Cl−) 是果汁中最丰富的阳离子和阴离子，并且两者都与蔗糖浓度呈负相关。 K+和Cl-浓度根据产地差异显着，K+和Cl-浓度较高的地区蔗糖浓度较低。这一发现表明，这些地区的甘蔗可能含有过量的这两种离子。果汁中的电导率 (EC) 始终与 K+ 和 Cl− 浓度呈正相关。因此，EC 可能是 K+ 和 Cl- 浓度的可靠指标，并且由于其易于测量而可用于营养诊断。为了提高甘蔗质量，我们建议在发现甘蔗汁 EC 值较高的一年内减少使用氯化钾（它同时提供 K+ 和 Cl−，并且是日本甘蔗生产中常用的钾肥）。
Sugarcane is an important economic crop in southwest Japan, but its production is decreasing. To increase sugar production, both sugarcane yield and quality should be improved. Fertilizer management is one of the factors that influence sugarcane quality. We accordingly focused on nutrients present in sugarcane juice and attempted to identify the key factors affecting sugarcane quality. We collected sugarcane samples from 2013 to 2015 from all of the sugar mills in Japan and examined the relationships between juice nutrients and sucrose concentration. Juice analysis over 3 year showed that potassium (K+) and chloride (Cl−) were the most abundant cation and anion in the juice and that both negatively correlated with the sucrose concentration. K+and Cl−concentrations significantly varied depending on production areas and those with higher K+and Cl−concentrations had a low sucrose concentration. This finding suggests that sugarcane in those areas may have been supplied with these two ions in excess. Electrical conductivity (EC) in the juice always positively correlated with K+and Cl−concentrations. EC may thus be a reliable indicator of K+and Cl−concentrations and could be used for nutrient diagnosis because of its ease of measurement. For improving sugarcane quality, we recommend that potassium chloride, which supplies both K+and Cl−and is a commonly used potassium fertilizer for sugarcane production in Japan, should be used in lower quantities in a year following one in which the EC of sugarcane juice at harvest is found to be high.