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0419U003373,
Кандидат технічних наук
27-06-2019
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Improvement of technology of high concentrations marsh from grain–growing raw material
Kovalchuk Svitlana S., Кандидат технічних наук
popup.head Mudrak Tatyana O.
popup.opponent Oliyinchuk Sergiy T.
popup.opponent Marinchenko Lolita V.
Дисертаційна робота присвячена удосконаленню технології висококонцентрованих бражок з крохмалевмісної сировини, що дає змогу підвищити концентрацію етанолу в бражках, зменшити питомі витрати енергоносіїв. Селекціоновано расу дріжджів S. cerevisiae ДО–16 для зброджування сусла концентрацією сухих речовин до 32 % за рН 3,0…6,0. Проведено порівняльний аналіз спиртових рас дріжджів, які мають осмофільні та термотолерантні властивості S. cerevisiae ДО–11, К–81, XII. Встановлено, що при культивуванні дріжджів на суслі концентрацією 28 % СР і вище необхідною умовою є корегування азотного живлення додатковим внесенням гліцину або карбаміду. Як активатори фізіолого–біохімічних властивостей спиртових дріжджів досліджено можливість використання металів в нано– та іонній формах (марганець, залізо, мідь, цинк, магній). Eфективним є застосування цинку та магнію. Встановлено композиції та концентрації ферментних препаратів для гідролізу складових сировини. Для забезпечення ефективного зброджування висококонцентрованого сусла визначено оптимальну кількість засівних дріжджів. З метою інтенсифікації спиртового бродіння зброджування необхідно проводити за відповідних температур: перша стадія (24 години) – 35 °С; друга стадія ( 48 годин) – за 30 °С, що сприятиме зниженню втрат вуглеводів на 20…30 %, і в результаті підвищенню концентрації етанолу в бражці.
2019-06-27
2020-04-03
Updated: 2025-12-14
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