ГРАФИЧЕСКИЙ ОБРАЗ ВЫСОКОКАЧЕСТВЕННЫХ ВИН
Аннотация
Объектами исследований были образцы высококачественных вин различных типов, выработанных предприятиями Краснодарского края, Ростовской области и зарубежными производителями из разных сортов винограда. Применяли метод автоматического титрования кислот в винах путем кулонометрической генерации основания с записью результатов потенциометрической индикации на компьютере. Оценку влияния сорта винограда и продолжительности хранения столового сухого вина на вид кривых титрования проводили на 77 технических сортах и клонах винограда (44 красных и 33 белых), районированных в Анапско-Таманской зоне Краснодарского Края в период с 2001 по 2016 гг. Виноград изучаемых сортов перерабатывали в условиях микровиноделия по двум схемам. Столовые красные сухие вина получали брожением на мезге. Столовые белые сухие вина получали по технологии высококачественных малоокисленных вин. Проведены экспериментальные исследования, подтверждающие индивидуальность кривой потенциометрического титрования и спектров поглощения проб вина конкретного наименования. Показана принципиальная возможность по координатам кривой титрования пробы вина устанавливать связь с сортом винограда и подлинностью производства вин с защищенными географическими указанием и наименованием места происхождения. Для подтверждения подлинности винодельческой продукции предложено сравнивать матрицу данных с координатами, описывающими среднюю кривую титрования конкретной винодельческой продукции, полученную производителем, с аналогичной матрицей, полученной контролирующей стороной, в условиях воспроизводимости. При близости вида кривых титрования проб вин, полученных из красных сортов винограда, предложено дополнительно прилагать матрицу данных, описывающих спектр поглощения в видимой области.
Ключевые слова: органические кислоты, подлинность вин, кривые потенциометрического титрования, спектральные характеристики
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