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高村, 一知; 星野, 浩子; 叶多, 謙蔵; タカムラ, カズノリ; ホシノ, ヒロコ; カノウタ, ケンゾウ; KAZUNORI, TAKAMURA; HIROKO, HOSHINO; KENZO, KANOHTA (1993)
Journal: 聖徳栄養短期大学紀要
Languages: Japanese
Types: Research
Subjects: pre-vitamin D_2, pre-ergocalciferol, vitamin D_2, ergocalciferol, raw shiitake mushroom, liquid chromatography-mass spectrometry, identification
Pre-vitamin D_2(pre-D_2)and vitamin D_2(D_2)in raw shiitake mushroom were identified by liquid chromatography-mass spectrometry (LC-MS) with modified plasmaspray. 1. Pre-D_2 and D_2 in raw shiitake mushroom were separated by LC. 2. Pre-D_2 was confirmed parent ion(m/z 397 [M+H]^+)to scan number 259 of total ion chromatogram. 3. D_2 was cofirmed parent ion(m/z 397 [M+H]^+) to scan number 296 of total ion chromatogram. 4. We have succeeded in obtaining mass spectra of pre-D_2 and D_2 that does not suffer from thermal ring closure.
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