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Citation:

Study on Shoot Nutrition of Qiongzhuea tum idinoda: A Rare andProtected Bamboo Species

  • Received Date: 2007-10-25
  • The shoot characteristics and its nutritional composition of a rare and endemic bamboo Q iongzhueatum idinoda were investigated and determined. The results showed that the sheath and flesh had an average weight of45. 48% and 54. 52%, respectively; the flesh was composed by 90. 80% water and 9. 20% drymaterial, the latteramounted to 4. 99% of the whole fresh weight. Dried shoots contained 348. 3 mg·g-1 p rotein, 349. 93 mg·g-1amino acid, 115 mg·g-1 fat, 29. 8 mg·g-1 soluble sugar, 68. 2 mg·g-1 P, 0. 07 mg·g-1 Fe, 0. 54 mg·g-1Ca, 1. 63 mg·g-1 Mg, 134. 80 mg·kg-1 Zn and 0. 50 mg·kg-1 Se. The composition of p rotein and amino acidsin Q. tum idinoda shoots varies among geographical sites, the middle and west geographical p rovenances showed ahigher content; both reduced alongwith the elevation and the shoot period; they decreased evidently from the upperto the lower part in shoots; boiled shoots had the highest p rotein content of 405. 6 mg·g-1 in all samp les, whereasabout 75% amino acids lost; both increased after fertilization. Suggestions were given on the selection ofgeographical p rovenance, fertilization and managementmethod of Q. tum idinoda for its sustainable development onutilization and resource conservation.
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Study on Shoot Nutrition of Qiongzhuea tum idinoda: A Rare andProtected Bamboo Species

  • 1. Research Institute of Subtrop ical Forestry, CAF, Fuyang 311400, Zhejiang, China
  • 2. Forestry Bureau of Zhaotong City, Zhaotong 657000,Yunnan, China
  • 3. Sanjiangkou State Forestry Centre of Daguan County, Yunnan Province ,Daguan 657400, Yunnan, China

Abstract: The shoot characteristics and its nutritional composition of a rare and endemic bamboo Q iongzhueatum idinoda were investigated and determined. The results showed that the sheath and flesh had an average weight of45. 48% and 54. 52%, respectively; the flesh was composed by 90. 80% water and 9. 20% drymaterial, the latteramounted to 4. 99% of the whole fresh weight. Dried shoots contained 348. 3 mg·g-1 p rotein, 349. 93 mg·g-1amino acid, 115 mg·g-1 fat, 29. 8 mg·g-1 soluble sugar, 68. 2 mg·g-1 P, 0. 07 mg·g-1 Fe, 0. 54 mg·g-1Ca, 1. 63 mg·g-1 Mg, 134. 80 mg·kg-1 Zn and 0. 50 mg·kg-1 Se. The composition of p rotein and amino acidsin Q. tum idinoda shoots varies among geographical sites, the middle and west geographical p rovenances showed ahigher content; both reduced alongwith the elevation and the shoot period; they decreased evidently from the upperto the lower part in shoots; boiled shoots had the highest p rotein content of 405. 6 mg·g-1 in all samp les, whereasabout 75% amino acids lost; both increased after fertilization. Suggestions were given on the selection ofgeographical p rovenance, fertilization and managementmethod of Q. tum idinoda for its sustainable development onutilization and resource conservation.

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