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http://dx.doi.org/10.9721/KJFST.2014.46.6.671

Physicochemical Characteristics and Antioxidant Activity of Dutch Coffee Depending on Different Extraction Conditions and Storage  

So, Yun-Ji (Department of Food and Nutrition.Research Institute of Human Ecology, Seoul National University)
Lee, Min-Woo (Department of Food and Nutrition.Research Institute of Human Ecology, Seoul National University)
Yoo, Kyung-Mi (Department of Food and Nutrition.Research Institute of Human Ecology, Seoul National University)
Kang, Hee-Jin (Department of Food and Nutrition.Research Institute of Human Ecology, Seoul National University)
Hwang, In-Kyeong (Department of Food and Nutrition.Research Institute of Human Ecology, Seoul National University)
Publication Information
Korean Journal of Food Science and Technology / v.46, no.6, 2014 , pp. 671-676 More about this Journal
Abstract
This study was designed to evaluate the changes in the physicochemical properties and antioxidant activity of Dutch coffee (cold brew) under different conditions of extraction and storage. Dutch coffee was extracted from ground coffee soaked in water at 4 or $20^{\circ}C$ and stored for 8 weeks at 4 or $20^{\circ}C$. The storage temperature affected the decline in pH and increase in acidity compared to the extraction temperature. The total phenol content partly decreased during the storage period. As the extraction temperature increased, the ABTS [2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid)] and DPPH (2,2-diphenyl-1-picrylhydrazyl) radical-scavenging activities also increased; in fact, DPPH radical-scavenging activity showed a general increase. As the storage time prolonged, the caffeine content decreased, but the contents of caffeic acid and chlorogenic acid increased. The results for all kinds of samples indicated that the general bacterial count was <1 CFU/mL, which indicated that the coffee can be stored for and consumed within 8 weeks.
Keywords
Dutch coffee; extraction temperature; storage; antioxidant activity; general bacterial count;
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  • Reference
1 Korean Intellectual Property Rights Information Service. Search word: Dutch coffee. Available from: http://www.kipris.or.kr. Accessed Jun 18, 2014.
2 Peters A. Brewing makes the difference. pp. 97-106. In: Proceedings of the 14th International Scientific Colloquium on Coffee. July 14-19, San Francisco, CA, USA. ASIC, Bussigny, Switzerland (1991)
3 Hwang SH, Kim KS, Kang HJ, Kim MJ. Phenolic compound contents and antioxidative effects on Dutch coffee by extraction time. Korean Publ. Health Res. 39: 21-29 (2013)
4 Lin SY, Wang LH, Lin YH, Han YH, Wang YS, Yeh CS. Antioxidative activity and caffeine content of coffee from different preparation methods. Taiwan. J. Agric Chem. Food Sci. 47: 268-275 (2009)
5 Voilley A, Sauvageot F, Simatos D. Influence of some processing conditions on the quality of coffee brew. J. Food Process Pres. 5: 135-143 (1981)   DOI
6 Bell LN, Wetzel CR, Grand AN. Caffeine content in coffee as influenced by grinding and brewing techniques. Food Res. Int. 29: 785-789 (1996)   DOI   ScienceOn
7 Snchez-Gonzlez I, Jimnez-Escrig A, Saura-Calixto F. In vitro antioxidant activity of coffees brewed using different procedures (Italian, espresso, and filter). Food Chem. 90: 133-139 (2005)   DOI
8 Gloess AN, Schonbachler B, Klopprogge B, Lucio D, Chatelain K, Bongartz A, Strittmatter A, Rast M, Yeretzian C. Comparison of nine common coffee extraction methods: instrumental and sensory analysis. Eur. Food Res. Technol. 236: 607-627 (2013)   DOI
9 Morales FJ, Jimnez-Prez S. Free radical scavenging capacity of Maillard reaction products as related to colour and fluorescence. Food Chem. 72: 119-125 (2001)   DOI   ScienceOn
10 Lee SY. A study of preference and alkaloid content of various commercial coffees. MS thesis, Youngnam University, Gyeongsan, Korea (2004)
11 Sivetz M, Foote HE. Coffee Processing Technology. Avi Pub Co., Inc., London, UK. pp. 127-161 (1963)
12 Giampiero S, Carla M, Paola P, Dino M. Effect of roasting degree, equivalent thermal effect and coffee type on radical scavenging activity of coffee brews and their phenolic fraction. J. Food Eng. 90: 74-80 (2009)   DOI   ScienceOn
13 Kim DO, Lee LW, Lee HJ, Lee CY. Vitamin C equivalent antioxidant capacity (VCEAC) of phenolic phytochemicals. J. Agr. Food Chem. 50: 3713-3717 (2002)   DOI   ScienceOn
14 Brand-Williams W, Cuvelier ME, Berset C. Use of a free radical method to evaluate antioxidant activity. LWT-Food Sci. Technol. 28: 25-30 (1995)   DOI   ScienceOn
15 Sopelana P, Prez-Martnez M, Lopez-Galilea I, de Peaa MP, Cid C. Effect of ultra high temperature (UHT) treatment on coffee brew stability. Food Res. Int. 50: 682-690 (2013)   DOI
16 Rosa MD, Barbanti D, Lerici CR. Changes in coffee brews in relation to storage temperature. J. Sci. Food Agr. 50: 227-235 (1990)   DOI
17 Perez-Martinez M, Sopelana P, de Pena MP, Cid C. Effects of refrigeration and oxygen on the coffee brew composition. Eur. Food Res. Technol. 227: 1633-1640 (2008)   DOI
18 Sivetz M, Desrosier NW. Coffee Technology. Avi Pub Co., inc., Westport, CT, USA. pp. 527-575 (1979)
19 Manzocco L, Lagazio C. Coffee brew shelf life modelling by integration of acceptability and quality data. Food Qual. Prefer. 20: 24-29 (2009)   DOI
20 Delgado-Andrade C, Morales FJ. Unraveling the contribution of melanoidins to the antioxidant activity of coffee brews. J. Agr. Food Chem. 53: 1403-1407 (2005)   DOI   ScienceOn
21 Bekedam EK, Schols HA, Van Boekel MA, Smit G. Incorporation of chlorogenic acids in coffee brew melanoidins. J. Agr. Food Chem. 56(6): 2055-2063 (2008)   DOI
22 Ludwig IA, Sanchez L, Caemmerer B, Kroh LW, De Pena MP, Cid C. Extraction of coffee antioxidants: Impact of brewing time and method. Food Res. Int. 48: 57-64 (2012)   DOI   ScienceOn
23 Lee GC. 'Excessive bacteria' manufacturers prosecuted for poor hygiene Dutch coffee. Available from: http://www.yonhapnews.co.kr/bulletin/2013/11/13/0200000000AKR20131113198500004.HTML?from=search. Accessed Sep. 4, 2014.
24 Kreicbergs V, Dimins F, Mikelsone V, Cinkmanis I. Biologically active compounds in roasted coffee. pp. 110-115. In: The 6th Baltic Conference on Food Science and Technology on Innovations for Food Science and Production. May 5-6, Jelgava, Latvia. Latvia University of Agriculture Faculty of Food Technology, Jelgava, Latvia (2011)