COMPARISON OF SOME CHEMICAL, TEXTURAL AND SENSORIAL PROPERTIES OF COMMERCIAL HAZELNUT-CACAO SPREADS

Öz

The lack of standard regulations for the formulation of hazelnut-cacao spreads makes them susceptible to food fraud.The present study examines the chemical, rheological and sensory characteristics of six different commercial hazelnut-cacao spreads coded as A, B, C, D, E and F. The color values for L*, chroma and hue angle were detected between 32.68-38.11, 13.76-17.18, 50.83-54.61, respectively. Sucrose was the only sugar type detected in the samples and its concentration was found between 53.63-57.60 g/100g spread. For textural analysis sample F was found firmer and stickier than other samples. Aldehyde, pyrazine, terpene, phenol, ketone, furan and acid compounds were detected as volatile aroma compounds and their relative concentrations showed significant difference between each other. The total phenolic content of the samples was detected between 346.81-643.09 mgGAE/kgDFW. Catechin (21.13-35.79 mg/kgDFW) and epicatechin (44.62-108 mg/kgDFW) were the major phenolic compounds of the tested spreads. Sensorial results showed that the samples B and D are the most preferred ones.

Anahtar Kelimeler

• hazelnut-cacao cream
• textural properties
• sugar analysis
• aroma compounds
• phenolics

KAKAOLU-FINDIK KREMALARININ BAZI KİMYASAL, TEKSTÜREL VE DUYUSAL ÖZELLİKLERİNİN KARŞILAŞTIRILMASI

Öz

Kakaolu fındık kreması formülasyonu için herhangi bir standartın bulunmaması ürünü tağşiş ve taklite açık hale getirmektedir. Bu çalışmada piyasadan temin edilen altı farklı kakaolu-fındık kremasının (A, B, C, D, E ve F olarak kodlanmıştır) kimyasal, tekstürel ve duyusal özellikleri incelenmiştir. L*, chroma ve hue açısı için renk değerleri sırasıyla 32.68-38.11, 13.76-17.18, 50.83-54.61 arasında tespit edilmiştir. Örneklerde şekerlerden yalnızca sakkaroz tespit edilmiş olup, miktarları 53.63-57.60 g/100 g krema arasında bulunmuştur. Örneklerin tekstürel farklılıkları enstrümantal olarak uygulanan sürülebilirlik testleri ile belirlenmiş ve F örneği, diğer numunelere göre daha sert ve yapışkan bulunmuştur. Uçucu aroma bileşikleri olarak aldehit, pirazin, terpen, fenol, keton, furan ve asit bileşikleri tespit edilmiş ve bağıl konsantrasyonları birbirleri arasında anlamlı farklılık göstermiştir. Örneklerin toplam fenolik madde içeriği 346.81-643.09 mg GAE/kg DFW arasında, kateşin (21.13-35.79 mg/kg DFW) ve epikateşin (44.62-108 mg/kg DFW) baskın fenolik bileşikler olarak belirlenmiştir. Duyusal analiz sonuçları, B ve D numunelerinin en çok tercih edilenler olduğunu göstermiştir.

Anahtar Kelimeler

• Kakaolu fındık kreması
• tekstür özellikleri
• aroma bileşikleri
• fenolikler

Kaynakça

1. Alasalvar, C., Shahidi, F., Cadwallader, K. R. (2003). Comparison of natural and roasted Turkish tombul hazelnut (Corylus avellana L.) volatiles and flavor by DHA/GC/MS and descriptive sensory analysis. J Agr Food Chem 51(17): 5067-5072.
2. Arcan, I., Yemenicioğlu, A. (2009). Antioxidant activity and phenolic content of fresh and dry nuts with or without the seed coat. J Food Compos Anal (3): 184-188. Bonvehi, J. S., Francesc, V. C. (2009). Detecting vegetable oil adulteration in hazelnut paste (Corylus avellana L.). Int J Food Sci Technol 44(3): 456-466.
3. Burdack-Freitag, A., Schieberle, P. (2012). Characterization of the key odorants in raw Italian hazelnuts (Corylus avellana L. var. Tonda Romana) and roasted hazelnut paste by means of molecular sensory science. J Agr Food Chem 60(20): 5057-5064.
4. Čížková, H., Rajchl, A., Šnebergrová, J., Voldřich, M. (2013). Filbertone as a marker for the assessment of hazelnut spread quality. Czech J Food Sci 31(1): 81-87. Frauendorfer, F., Schieberle, P. (2006). Identification of the key aroma compounds in cocoa powder based on molecular sensory correlations. J Agr Food Chem 54(15): 5521-5529.
5. Haylock, S. (1995). Dried dairy ingredients for confectionery. Manuf. Confect. 75: 65–73.
6. Hu, Y., Pan, Z. J., Liao, W., Li, J., Gruget, P., Kitts, D. D., Lu, X. (2016). Determination of antioxidant capacity and phenolic content of chocolate by attenuated total reflectance-Fourier transformed-infrared spectroscopy. Food Chem 202: 254-261.
7. Kokkinidou, S., Peterson, D., Bloch, T., Bronston, A. (2018). The important role of carbohydrates in the flavor, function, and formulation of oral nutritional supplements. Nutrients 10(6): 742.
8. Krings, U., Zelena, K., Wu, S., Berger, R. G. (2006): Thin-layer high-vacuum distillation to isolate volatile flavour compounds of cocoa powder. Eur Food Res Technol 223(5): 675.

9. Li, Y., Feng, Y., Zhu, S., Luo, C., Ma, J., Zhong, F. (2012). The effect of alkalization on the bioactive and flavor related components in commercial cocoa powder. J Food Compos Anal. 25(1): 17-23.
10. Liang, B., Hartel, R. W. (2004). Effects of milk powders in milk chocolate. J Dairy Sci. 87(1): 20-31.
11. Lončarević, I., Pajin, B., Petrović, J., Zarić, D., Sakač, M., Torbica, A., Omorjan, R. (2016). The impact of sunflower and rapeseed lecithin on the rheological properties of spreadable cocoa cream. J Food Eng 171: 67-77.
12. Meilgaard, M. C., Carr, B. T., Civille, G. V. (1999). Sensory evaluation techniques, CRC press.
13. Oracz, J., Zyzelewicz, D., Nebesny, E. (2015). The content of polyphenolic compounds in cocoa beans (Theobroma cacao L.), depending on variety, growing region, and processing operations: a review. Crit Rev Food Sci 55(9): 1176-1192.
14. Pelvan, E., Alasalvar, C., Uzman, S. (2012). Effects of roasting on the antioxidant status and phenolic profiles of commercial Turkish hazelnut varieties (Corylus avellana L.). J Agr Food Chem 60(5): 1218-1223.
15. Qin, X. W., Lai, J. X., Tan, L. H., Hao, C. Y., Li, F. P., He, S. Z., Song, Y. H. (2017). Characterization of volatile compounds in Criollo, Forastero, and Trinitario cocoa seeds (Theobroma cacao L.) in China. Int J Food Prop 20(10): 2261-2275.
16. Racolta, E., Tofana, M., Muresan, C. C., Socaci, S., Florin, G. G., Vlad, M. (2014). Volatile compounds and sensory evaluation of spreadable creams based on roasted sunflower kernels and cocoa or carob powder. Bull UASVM Food Sci Technol 71: 107-113.
17. Sacchetti, G., Ioannone, F., De Gregorio, M., Di Mattia, C., Serafini, M., Mastrocola, D. (2016). Non enzymatic browning during cocoa roasting as affected by processing time and temperature. J Food Eng 169: 44-52.
18. Shahidi, F., Alasalvar, C., Liyana-Pathirana, C. M. (2007). Antioxidant phytochemicals in hazelnut kernel (Corylus avellana L.) and hazelnut byproducts. J Agr Food Chem 55(4): 1212-1220.
19. Singleton, V. L., Orthofer, R., Lamuela-Raventós, R. M. (1999). [14] Analysis of total phenols and other oxidation substrates and antioxidants by means of folin-ciocalteu reagent. In Methods in enzymology 299, 152-178. Academic press.
20. Taş, N. G., Gökmen, V. (2017). Phenolic compounds in natural and roasted nuts and their skins: a brief review. Curr Opin Food Sci 14: 103-109.
21. Żyżelewicz, D., Krysiak, W., Oracz, J., Sosnowska, D., Budryn, G., Nebesny, E. (2016). The influence of the roasting process conditions on the polyphenol content in cocoa beans, nibs and chocolates. Food Res Int 89: 918-929