Biopolym. Cell. 2003; 19(5):393-413.
Огляди
Вплив умов культивування мікроорганізмів – продуцентів екзополісахаридів на їхній синтез та фізико-хімічні властивості
1Пирог Т. П., 1Кузьмінська Ю. В.
  1. Інститут мікробіології і вірусології ім. Д. К. Заболотного НАН України
    вул. Академіка Заболотного, 154, Київ, Україна, 03680

Abstract

В огляді наведено літературні та власні експериментальні дані щодо впливу умов культивування продуцентів на синтез екзополісахаридів (ЕПС) і їхні фізико-хімічні властивості. Утворення мікробних ЕПС (кількість синтезованих полісахаридів, швидкість їхнього синтезу та вихід залежно від субстрату) обумовлено складом живильного середовища (природа джерела вуглецю, азоту, фосфору, їхня концентрація, співвідношення вуглець/азот, іони металів), способом подачі субстрату, фізико-хімічних факторів (температура, рН, рівень аерації), тривалістю процесу періодичного культивування, швидкістю, розбавлення середовища при безперервному культиву­ванні. В різних умовах вирощування продуцента може змінюватися хімічний склад ЕПС, їхня молекулярна маса, а також співвідношення декількох полісахаридів, що впливає на реологічні властивості розчинів ЕПС, які визначають практичну значущість цих полімерів. Обговорюється питання про необхідність використання даних стосовно впливу умов культивування на синтез та фізико-хімічні властивості ЕПС у біотехнології мікробних полісахаридів при розробці технологій одержання ЕПС із стабільними заданими властивостями.

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