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首页> 外文期刊>Journal of Agricultural Science >Cassava (Manihot esculenta Crantz) Tuber Quality as Measured by Starch and Cyanide (HCN) Affected by Nitrogen, Phosphorus, and Potassium Fertilizer Rates
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Cassava (Manihot esculenta Crantz) Tuber Quality as Measured by Starch and Cyanide (HCN) Affected by Nitrogen, Phosphorus, and Potassium Fertilizer Rates

机译：木薯（Manihot esculenta Crantz）块茎品质，受氮，磷和钾肥用量影响的淀粉和氰化物（HCN）量度

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Cassava (Manihot esculenta Crantz) is an important subsistence crop for many poor rural families in Africa. Cassava contains cyanogenic glucosides (linamarin and lotaustralin) which liberate hydrogen cyanide (HCN) during tuber processing. Once liberated, HCN attaches to the processed tuber. Continuous consumption of processed tuber containing high HCN concentration coupled with low protein intake causes Konzo – a paralyzing disorder that impacts children and women of childbearing age. There are ways to reduce HCN concentration during tuber processing; however, this can also reduce the overall starch content in the cassava tuber. A study comprising twenty treatments consisting of different combinations of nitrogen (N), phosphorus (P), and potassium (K) fertilizer rates was initiated in 2013 in the coastal Dondo District of Mozambique to assess cassava tuber quality as measured by starch and HCN. Significant differences were observed in starch content (CSC) of unprocessed tubers due to combined addition of N, P and K fertilizer rates, sample size, and estimation procedure. However, no significant differences were observed in HCN concentration in tubers due to the addition of N, P and K fertilizer. The HCN concentration in cassava tuber appears to be a function of the physiology of the crop or possibly cassava variety rather than the environment or conditions under which the crop is grown.
机译：木薯（Manihot esculenta Crantz）是非洲许多贫困农村家庭的重要生计作物。木薯中含有氰化葡糖苷（亚麻酸和水杨酸），在块茎加工过程中会释放出氰化氢（HCN）。解放后，HCN附着在已处理的块茎上。持续食用高浓度HCN的加工块茎加上蛋白质摄入量低会导致Konzo-一种麻痹性疾病，会影响儿童和育龄妇女。有多种方法可以降低块茎加工过程中的HCN浓度;但是，这也可以减少木薯块茎中的总淀粉含量。 2013年在莫桑比克沿海Dondo区启动了一项研究，该研究包含二十种不同氮，磷，钾肥组合的处理，以评估木薯块茎的品质，该品质通过淀粉和HCN进行测量。由于氮，磷和钾肥的添加量，样本量和估算程序的共同添加，未加工块茎的淀粉含量（CSC）差异显着。但是，由于添加了氮，磷和钾肥，块茎中HCN的浓度没有显着差异。木薯块茎中的HCN浓度似乎是根据作物生理状况或木薯品种而定，而不是作物生长的环境或条件。

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