RESEARCH ON THE TECHNOLOGICAL PARAMETERS OF ORANGE RAKIA PRODUCTION
DOI:
https://doi.org/10.18173/2354-1059.2025-0043Keywords:
fermentation process, fermentation factor, orange juice, native yeast, rakiaAbstract
This research aims to identify the technological parameters involved in the production of rakia from Ha Giang oranges. The fermentation must was prepared by adding the disinfectant and antioxidant K2S2O5 at a concentration of 150 mg/L to ensure the sterility and stability of the orange juice for the subsequent fermentation stage. Using the native yeast strain Saccharomyces cerevisiae HB2 isolated from oranges, the factors influencing the fermentation process were determined, including fermentation temperature of 30oC, initial total soluble solids after adding sugar of 20°Bx, initial yeast cell density of 8.5 x 106 CFU/mL, and pH of 4.1. At the pilot scale of 5 liters, after fractional distillation and the removal of 3% ethanol from the head and 3% from the tail fractions, the resulting heart fraction had an alcohol concentration of 53% vol. After dilution to a final alcohol concentration of 35% vol by distilled water, the finished rakia had a characteristic orange aroma. The sensory score achieved was 18.16, which is in the ‘good’ category.
References
[1] Nguyen HD, (2003). Citrus fruit trees include orange, lemon, tangerine, and grapefruit. Nghe An Publishing House, p. 22 (in Vietnamese).
[2] Nguyen CK and Ha TAD, (2007). Vietnamese Food Composition Table. Medical Publishing House, Hanoi, p. 210 (in Vietnamese).
[3] Marinov MM, (2005). Technology of high-alcohol beverages and spirits. Academic Publishing House of University of Food Technology, Plovdiv, Bulgaria, p. 100–121 (in Bulgarian).
[4] Nashar M & Ivanova D, (2024). The Bulgarian ethnic tradition of manufacturing rakia: a cultural heritage and a potential functional food resource. Journal of Ethnic Foods, 11–17. https://doi.org/10.1186/s42779-024-00233-7.
[5] Novik A, (2024). Rakia among the Albanians of the Balkans: borrowing technology, cultural phenomenon, and a constant of tradition. Stratum Plus, (5), 371–382. https://doi.org/10.55086/sp245371382.
[6] Nasir A, Rahman SS, Hossain MM & Choudhury N, (2017). Isolation of Saccharomyces cerevisiae from pineapple and orange and study of metals’ effectiveness on ethanol production. European Journal of Microbiology and Immunology, 7(1), 76–91. DOI: 10.1556/1886.2016.00035.
[7] Nasreen Z, Jabeen S, Shafique M, Usman S, Yaseen T, Yasmeen A & Nazir S, (2014). Production of alcohol by yeast isolated from apple, orange and banana. International Journal of Food and Nutrition Sciences, 1(2), 16–19.
[8] Nguyen PT & Nguyen VT, (2022). Isolation, selection and identification of natural yeasts for orange wine fermentation (Citrus nobilis Var. Typica Hassk). Can Tho University Journal of Science, 58(1B), 121–131. DOI: 10.22144/ctu.jvn.2022.013 (in Vietnamese).
[9] Ly TTT & Tran TCL, (2020). Isolation and selection of yeast strains for orange wine production (Citrus sinensis). Journal of Nutrition and Food, 16(5), 84–94 (in Vietnamese).
[10] Okunowo WO, Okotore RO & Osuntoki AA, (2005). The alcoholic fermentative efficiency of indigenous yeast strains of different origins on orange juice. African Journal of Biotechnology, 4(11), 1290–1296.
[11] Pham QT, Dao TKN & Ho TA, (2024). Isolation and selection of yeast strains capable of fermenting orange juice. HNUE Journal of Science: Natural Sciences, 69(2), 140–150. https://doi.org/10.18173/2354-1059.2024-0029 (in Vietnamese).
[12] Santos CC, Duarte WF, Carreiro SC & Schwan RF, (2013). Inoculated fermentation of orange juice (Citrus sinensis L.) for the production of a citric fruit spirit. Journal of the Institute of Brewing, 119, 280–287. DOI: 10.1002/jib.89.
[13] Le TM, Nguyen TH, Pham TT, Nguyen TH & Le TLC, (2007). Methods of analysis in fermentation technology. Science and Technology Publishing House, Hanoi, p. 52–54; p. 97; p. 141–142 (in Vietnamese).
[14] TCVN 4589, (1988). Canned foods – Determination of acid content (in Vietnamese).
[15] TCVN 5562, (2009). Beer – Determination of ethanol (in Vietnamese).
[16] TCVN 5565, (1991). Beer – Method for determination of original-soluble substances (in Vietnamese).
[17] TCVN 8009, (2009). Distilled liquors – Determination of aldehyde content (in Vietnamese).
[18] TCVN 3217, (1979). Sensory analysis – Methodology test by means of marking (in Vietnamese).
[19] Obasi BC, Whong CMZ, Ado SA & Abdullahi IO, (2014). Isolation and identification of yeast associated with fermented orange juice. The International Journal of Engineering and Science, 3(9), 64–69.
[20] Vu VC, (2016). Perfecting the technology for producing fruit brandy (Lychee, pineapple) on an industrial scale. SXTN.04.14/CNSHCB. Eresson Beer and Alcohol Company Limited (in Vietnamese).
[21] Walker GM & Stewart GG, (2016). Saccharomyces cerevisiae in the production of fermented beverages. Beverages, 2(4), 30. https://doi.org/10.3390/beverages2040030.
