Head Space Gas Chromatographic Method Using the Internal Standard for Determination of Aroma of Roast and Ground Coffee
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- OSAJIMA YUTAKA
- Laboratory of Food Analysis, Faculty of Agriculture, Kyushu University
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- SHIMODA MITSUYA
- Laboratory of Food Analysis, Faculty of Agriculture, Kyushu University
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- IRIKI EMIKO
- Laboratory of Food Analysis, Faculty of Agriculture, Kyushu University
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- ITO HIROKO
- Nakatsu Womans College
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- SAKANE YASUNOBU
- Laboratory of Food Analysis, Faculty of Agriculture, Kyushu University
Bibliographic Information
- Other Title
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- コーヒーの香り I 内部標準法によるコーヒー粉末香気のヘッドスペースガスクロマトグラフ分析
- ナイブ ヒョウジュンホウ ニヨル コーヒー フンマツ コウキ ノ ヘッド スペ
- コーヒーの香りに関する研究(第1報)
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Abstract
An internal standard method for the gas chromatographic head space analysis of the aroma of roast and ground coffee was developed as follows. Five grams of ground coffee was weighed into a 20 ml glass vessel. The vessel was sealed with the silicon rubber septum which hung a filter paper strip (1×2cm). Five μ1 of the internal standard solution (sec-butanol, 3% in benzylalcohol) was injected onto the paper strip with a microcyringe. After equilibration at 30°C for 60 min, 0.1 ml of the head space gas was applied to a gas chromatographic method. 1) The internal standard substance was in adsorption equilibrium when the vessel was incubated at 30°C for 60 min. 2) The relative amount of the aroma based on a relative peak height (sec-butanol=1.00) was little influenced by temperature. 3) A linear relationship existed between the amount of internal standard substance and its peak height. 4) The reproducibilities based on the coefficient of variation ranged from 3.2% (propionaldehyde) to 10.0% (n-hexane) for quantitative analysis of the aroma constituents in the head space gas. 5) The aroma characteristics and the changes of the flavour during storage of ground coffee were studied by comparison of the relative concentration of ten constituents in the headspace gas.
Journal
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- NIPPON SHOKUHIN KOGYO GAKKAISHI
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NIPPON SHOKUHIN KOGYO GAKKAISHI 26 (3), 105-110, 1979
Japanese Society for Food Science and Technology
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Details 詳細情報について
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- CRID
- 1390282681382757248
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- NII Article ID
- 130003966950
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- NII Book ID
- AN00192587
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- NDL BIB ID
- 2046574
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- ISSN
- 00290394
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed