携帯型近赤外分光器を用いたトウモロコシ稈汁ブリックス値の非破壊評価

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  • Nondestructive Evaluation of Brix Values of Corn Stalks Using a Portable Near-infrared Spectrometer
  • ケイタイガタ キンセキガイ ブンコウキ オ モチイタ トウモロコシカンジュウ ブリックスチ ノ ヒハカイ ヒョウカ

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The high Brix value of corn stalk is a useful indicator of high stover digestibility and high dry stover weight. Using a portable near-infrared spectrometer, we investigated whether non-destructive evaluation of Brix values was possible with corn grown. SEP＝2.09, R2v＝0.53, and RPD＝1.38 was observed in the MLR analysis and PLSR analysis resulted in SEP＝1.66, R2v＝0.66, and RPD＝1.75, usable for sample screening. In this test, the Brix value of the stalk was related to the functional group of water. A refractometer measures the concentration of an aqueous solution using a refractive index based on the principle of total internal reflection. Portable near-infrared spectrometers can indirectly measure Brix values of the stalk from water content.

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