Aslı ARSLAN KULCAN, Ursula ZOUA ASSOUMOU, Mine AYGÜN, Şirin KUZU, Demet YILDIZ, Necihan KAYA, Ahmet HACIOĞLU, Mustafa KARHAN

KEÇİBOYNUZU EKSTRAKTI TAKVİYESİNİN YOĞURDUN VE DONDURMANIN KİMYASAL VE DUYUSAL ÖZELLİKLERİ ÜZERİNE ETKİSİ

Bu çalışmada yoğurt ve dondurma, bu ürünlere fonksiyonel özellikler kazandırmak için keçiboynuzu ekstraktı ile zenginleştirilmiştir. Keçiboynuzu ekstraktı konsantrasyonu açısından üç formülasyonla üç farklı tipte dondurma üretilmiştir. Birinci tipte karışıma sadece %8, 10 ve 12 oranlarında keçiboynuzu ekstraktı ilave edilmiştir. İkinci ve üçüncü tipler aromalarıyla ilkinden farklı olup sırasıyla limonlu ve çikolatalıdır. Yoğurt örnekleri, set tipi yoğurt prosedürüne göre üretilmiştir. Analitik verilere göre; eklenen keçiboynuzu ekstraktındaki artışla hem yoğurt hem de dondurma örneklerinin D-pinitol miktarı, toplam fenolik madde miktarı ve antioksidan aktivite değerlerinde önemli artışlar gözlenmiştir (P < 0.05). Keçiboynuzu ekstraktı ile % 8 oranında takviye edilen dondurma örneklerinin incelenen tüm duyusal özelliklerde daha yüksek puanlara sahip olduğu görülmüştür. Yoğurt örneklerinden elde edilen sonuçlara göre, % 10 oranında takviye edilenler görünüm, aroma ve tat açısından istatistiksel olarak daha yüksek (P < 0.05) puan almıştır.

Anahtar Kelimeler:

keçiboynuzu, D-pinitol, yoğurt, dondurma

IMPACT OF CAROB EXTRACT SUPPLEMENTATION ON CHEMICAL AND SENSORY PROPERTIES OF YOGURT AND ICE CREAM

In this study, yogurt and ice cream were enriched with carob extract, for giving them functional properties. Three different types of ice cream were produced with three formulations in terms of carob extract concentration. In the first type only carob extract in proportions of 8, 10 and 12% was added to the mixture. The second and third types were different from the first by their aromas: respectively lemon and chocolate. The yogurt samples were produced based on a set type of yogurt procedure. According to analytical data, considerable increments in D-pinitol content, total phenolic compounds content and antioxidant activity values were observed in both of yogurt and ice cream samples with increasing carob extract added (P < 0.05). The ice cream samples supplemented at a ratio of 8% had higher points in all examined sensory attributes. With respect to the results obtained from the yogurt samples, the one supplemented at a ratio of 10% was scored significantly higher (P < 0.05) on appearance, aroma and taste.

Keywords:

carob, D-pinitol, yogurt, ice cream,

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