Use of Gas Chromatography-Olfactometry (GCO) Techniques to Identify Aroma Compounds in Foods (Turkish with English Abstract)

Abstract

Gas chromatography-olfactometry (GCO) technique which is a combination of instrumental and sensory analysis techniques was developed by Fuller and coworkers in 1964. Gas chromatography-olfactometry (GCO) technique is widely used to identify aroma active compounds in various foods such as milk, cheese, meat, fruit, vegetable, fruit juice and wine and to determine the effect of these compounds on overall aroma. Several GCO methods have been developed to generate and handle GCO data and to determine a sensorial contribution of each aroma active compound in foods. In this study, general information on GCO meth¬ods used to determine aroma compounds in foods is presented and the studies concerning the use of this method in different foods are discussed.

Keywords

• Food, gas chromatography-olfactometry, aroma analysis, aroma extract, aroma active compound

Gıdalarda Aroma Maddelerinin Belirlenmesinde Gaz Kromatografisi-Olfaktometri (GCO) Tekniklerinin Kullanılması

Abstract

Enstrümantal ve duyusal analiz tekniklerinin bir kombinasyonu olan Gaz kromatografisi-olfaktometri (GCO) tekniği Fuller ve arkadaşları tarafından 1964 yılında geliştirilmiştir. Bu teknik süt, peynir, et, meyve, sebze, meyve suyu ve şarap gibi birçok gıda ürününde bulunan aroma aktif bileşenlerin tanımlanması ve bu bileşenlerin gıdanın tüm aroması üzerine etkilerinin ortaya konması amacıyla yaygın olarak kullanılmak¬tadır. GCO’da verilerin toplanması, işlenmesi ve gıdalarda bulunan her bir aroma aktif bileşenin duyusal katkısını saptamak için birçok GCO metodu geliştirilmiştir. Bu çalışmada; gıdalardaki aroma maddelerinin belirlenmesinde kullanılan GCO metotları hakkında genel bilgiler verilmiş ve bazı gıdalarda bu metotlarla ilgili çalışmalar değerlendirilmiştir.

Keywords

• Gıda, gaz kromatografisi-olfaktometri, aroma analizi, aroma ekstraktı, aroma aktif bileşen

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