Clarification dynamics of fresh apple must obtained from different apple cultivars grown in the south of Russia

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Abstract

Studies on the clarification and compact settling dynamics of apple must provide cider makers with insight into the possibility of using processing aids to achieve must clarification, as well as a better understanding of their usage levels and schemes. The present article analyzes the clarification dynamics of fresh apple must produced from the following cultivars: Margo, Dzhin, Orfey, Karmen, Ekzotika, Liberty, Persikovoe, Amulet, Zolotoe Letnee, and Ketni. In the study, the must clarification was carried out spontaneously (natural settling) and with the use of enzyme preparations, SQzyme PCL and Fructozym P. Must turbidity was determined using a LabScat 2 turbidity meter. The spontaneous clarification of fresh apple must was found to proceed slowly. The use of enzyme preparations significantly enhanced the clarification process. Within 8–16 h of adding SQzyme PCL, a 5–8% decrease was observed in the turbidity of apple must obtained from the cultivars Margo, Dzhin, Orfey, Ekzotika, and Liberty as compared to the spontaneous clarification of must obtained from the same cultivars. The efficacy of Fructozym P. was slightly lower. The compact settling dynamics of must are shown to depend significantly on the varietal characteristics of apple must and clarification duration. The compact settling velocity was calculated. The highest rate was noted in the must obtained from the cultivars Margo, Ekzotika, and Orfey, while the lowest rate was noted in the must produced from the Persikovoe cultivar. The use of SQzyme PCL increased the compact settling velocity by 1.5–4.0 times. The largest increase in the compact settling velocity was observed in the must obtained from Persikovoe and Karmen cultivars.

About the authors

N. M. Ageyeva

North Caucasian Federal Scientific Centre of Horticulture, Viticulture, Wine-making

Email: ageyeva@inbox.ru
ORCID iD: 0000-0002-9165-6763

A. A. Shirshova

North Caucasian Federal Scientific Centre of Horticulture, Viticulture, Wine-making

Email: anastasiya_1987@inbox.ru
ORCID iD: 0000-0003-1428-5935

A. A. Khrapov

North Caucasian Federal Scientific Centre of Horticulture, Viticulture, Wine-making

Email: hrapov-anton@bk.ru
ORCID iD: 0000-0001-6436-1970

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