Sensory evaluation of chocolate bar production materials of dry cocoa seeds in various fermentation treatments
The processing of chocolate bars is influenced by cocoa beans used. Chocolate bar is one of the downstream products with a simple processing process. The taste and aroma in candy comes from chocolate bars. Fermentation is an important activity in the formation of cocoa flavour. This study aims to determine the panellists’ acceptance of chocolate bars produced from various fermentation treatments of sun-dried cocoa beans. The materials used in this study were cocoa beans of varieties of Lindak. The fermentation variation consisted of two treatments, namely, the addition of the inoculum gradually (A1) and the addition of the inoculum simultaneously at the beginning of fermentation (A2). The inocula added were Sacharomyces cerevisiae (FNCC 3056), Lactococcus lactis (FNC 0086) and Acetobacter aceti (FNCC 0016). The control treatment was dry cocoa beans without fermentation (A0). The fermentation time was 120 h, then the fermented cocoa beans were processed into chocolate bars. The resulting chocolate bars were subjected to sensory analysis including evaluation of the taste of sepia, bitter, and sour taste and in the test the polyphenol content of chocolate bars was used. The results showed that there was a decrease in the septic, bitter and sour taste from treatment A0, A2 and A1, respectively. The highest polyphenol content was in A0, A2, and A1, respectively. Panellists stated that the preferred chocolate bar was made from cocoa beans with A1 treatment.
Ahmed I.M., Dai H., Zheng G., Cao F., Zhang G., Sun D., Wu F. (2013): Genotypic differences in physiological characteristics in tolerance to drought and salinity combined stress between Tibetian wild and cultivated barley. Plant Physiology and Biochemistry, 63: 49–60. https://doi.org/10.1016/j.plaphy.2012.11.004
Brázdil R., Trnka M., Mikšovský J., Řezníčková L., Dobrovolný P. (2015): Spring-summer droughts in the Czech Land in 1805–2012 and their forcings. International Journal of Climatology, 35: 1405–1421. https://doi.org/10.1002/joc.4065
Cattivelli L., Ceccarelli S., Romagosa I., Stanca M. (2011): Abiotic Stresses in Barley: Problems and Solutions. In: Ullrich, S.E. (ed.): Barley: Production, Improvement, and Uses. USA, Wiley-Blackwell: 283–306.
EBC Analysis committee (2010): Analytica – EBC. Germany, Fachverlag Hans Carl: 794.
Horáková V., Dvořáčková O., Mezlík T. (2010): List of recommended varieties 2010 (Seznam doporučených odrůd 2010). Ústřední kontrolní a zkušební ústav zemědělský (ÚKZÚZ) Brno. ISBN 978-80-7401-027-9.
Högy P., Poll C., Marhan S., Kandeler E., Fangmeier A. (2013): Impact of temperature increase and change in precipitation pattern on crop yield and yield quality of barley. Food Chemistry, 136: 1470–1477. https://doi.org/10.1016/j.foodchem.2012.09.056
Jagadish K.S.V., Kadam N.N., Xiao G. (2014): Agronomic and physiological response to high temperature, drought and elevated CO2 interaction in cereals. Advances in Agronomy, 127: 111–156.
Kolar P., Trnka M., Brázdil R. (2014): Influence of climatic factors on the low yields of spring barley and winter wheat in Southern Moravia (Czech Republic) during the 1961–2007 period. Theoretical and applied climatology, 117: 707–721. https://doi.org/10.1007/s00704-013-1037-3
MEBAK (2011): Raw materials: Collection of Brewing Analysis Methods of the Mitteleuropäische Brautechnische Analysenkommission (MEBAK), Germany, Freising-Weihenstephan: 341.
Mittler R. (2006): Abiotic stress, the field environment and stress combination. Trends in Plant Science, 11: 15–19. https://doi.org/10.1016/j.tplants.2005.11.002
Passarella V.S., Savin R., Slafer G.A. (2002): Grain weight and malting quality in barley as affected by brief periods of increased spike temperature under field condition. Australian Journal of Agricultural Research, 53: 1219–1227. https://doi.org/10.1071/AR02096
Passarella V.S., Savin R., Slafer G.A., (2005): Breeding effects on sensitivity of barley grain weight and quality to events of high temperature during grain filling. Euphytica, 141: 41–48. https://doi.org/10.1007/s10681-005-5068-4
Paynter B.H., Young K.J. (2004): Grain and malting quality in two-row spring barley are influenced by grain filling moisture. Australian Journal of Agricultural, 55: 539–550. https://doi.org/10.1071/AR02093
Prasad P.V.V., Pisipati S.R., Momcilovic I., Ristic Z. (2011): Independent and combined effects of high temperature and drought stress during grain filling on plant yield and chloroplast EF-Tu expression in spring wheat. Journal of Agronomy and Crop Science, 197: 430–441. https://doi.org/10.1111/j.1439-037X.2011.00477.x
Psota V., Horáková V., Kopřiva R. (2008): Barley varieties registered in the Czech Republic in 2008. Kvasný průmysl, 54: 186–192. https://doi.org/10.18832/kp2008012
Qureshi Z.A., Neibling H. (2009): Response of two-row malting spring barley to water cutoff under sprinkler irrigation. Agricultural Water Management, 96: 141–148. https://doi.org/10.1016/j.agwat.2008.07.012
Reinhardt D., Jansen G., Seddig S. (2013): Temperature stress during flowering time affect yield and quality parameters of waxy barley. Landbauforschung, 63: 79–83.
Rollins J.A., Habte E., Templer S.E., Colby T., Schmidt J., von Korff M. (2013): Leaf proteome alterations in the context of physiological and morphplogical response to drought and heat stress in barley (Hordeum vulgare L.). Journal of Experimental Botany, 64: 3201–3212. https://doi.org/10.1093/jxb/ert158
Samarah N.H., Alqudah A.M., Amayreh J.A., McAndrews G.M. (2009): The effect of late-terminal drought stress on yield components of four barley cultivars. Journal of Agronomy and Crop Science, 195: 427–441. https://doi.org/10.1111/j.1439-037X.2009.00387.x
Savin R., Nicolas M. E. (1996): Effects of short periods of drought and high temperature on grain growth and starch accumulation of two malting barley cultivars. Australian Journal of Plant Physiology, 23: 201–210. https://doi.org/10.1071/PP9960201
Savin R., Nicolas M.E. (1999): Effect of timing of heat stress and drought on growth and quality of barley grains. Australian Journal of Agricultural Research, 50: 357–364. https://doi.org/10.1071/A98080
Savin R., Stone P.J., Nicolas M.E., Wardlaw J.F. (1997): Grain growth and malting quality of barley 1. Effect of heat stress and moderatory high temperature. Australian Journal of Agricultural Research, 48: 615–624. https://doi.org/10.1071/A96064
Ugarte C., Calderini D.F., Slafer G.A. (2007): Grain weight and grain number responsiveness to pre-anthesis temperature in wheat, barley and triticale. Field Crops Research 100: 240–248. https://doi.org/10.1016/j.fcr.2006.07.010
Vaezi B., Bavei V., Shiran B. (2010): Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition. African Journal of Agricultural Research, 5: 881–892.
Wallwork M.A.B., Jenner C.F., Logue S.J., Sedgley M. (1998): Effect of high temperature during grain-filling on the structure of developing and malted barley grain. Annals of Botany, 82: 587–599. https://doi.org/10.1006/anbo.1998.0721