Antimicrobial treatment of grapes using sodium hypochlorite in winemaking and its effects on the chemical and sensory characteristics of wines.
This study was performed to examine the use of NaOCl as an alternative antimicrobial compound in winemaking because of the potential health problems that may arise as a result of the use of SO2. For this, the blank (non-treated), control (SO2-added), and sample (NaOCl-treated) wines were made, and microbial and chemical changes including sensory characteristics were analyzed during the fermentation periods. Treatment of grapes with NaOCl decreased the initial contaminating microbial population in grape must, resulting in higher growth of yeast and lactic acid bacteria. After 200 days of fermentation, the chemical analysis of sample wine revealed that it had higher ethanol content, redness (a*), and concentrations of fruity ester compounds and lower total acidity than the control. In the sensory analyses, the sample wine obtained a higher overall acceptability score (5.70) than the control (4.26). This result reveals that NaOCl can be used as an alternative to SO2 in winemaking for inhibiting the growth of contaminating microorganisms.
Institute for the 3Rs & Department of Laboratory Animal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 143-701, Korea.
Ki Seon
KS
Yoo
Ji Eun
JE
Ahn
Jin Soo
JS
Han
Eunyoung
E
Seo
Gan-Erdene
GE
Otgonbayar
Nam Soo
NS
Han
D000328:Adult; D000890:Anti-Infective Agents / Q000494:pharmacology*; D000431:Ethanol / Q000032:analysis / Q000378:metabolism; D005260:Female; D005285:Fermentation / Q000187:drug effects; D006801:Humans; D008297:Male; D012441:Saccharomyces cerevisiae / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D012973:Sodium Hypochlorite / Q000494:pharmacology*; D013649:Taste; D027843:Vitis / Q000737:chemistry / Q000187:drug effects* / Q000382:microbiology; D014920:Wine / Q000032:analysis* / Q000382:microbiology; D055815:Young Adult
D000890:Anti-Infective Agents; D000431:Ethanol; D012973:Sodium Hypochlorite