Acetāta iespējamā inhibējošā ietekme uz rauga Kluyveromyces marxianus metabolismu

6533b852fe1ef96bd12abbaf

RESEARCH PRODUCT

Acetāta iespējamā inhibējošā ietekme uz rauga Kluyveromyces marxianus metabolismu

subject

acetāts laktoze galaktoze Kluyveromyces marxianus vājo skābju stress Bioloģija

description

Vājās organiskās skābes spēj inhibēt mikroorganismu augšanu un metabolismu, tādējādi negatīvi ietekmējot biotehnoloģisko procesu efektivitāti. Veicot sūkalu fermentāciju ar raugu Kluyveromyces marxianus un novērojot acetāta uzkrāšanos fermentācijas vidē reizē ar augšanas un fermentācijas ātruma samazināšanos, tika nolemts izpētīt fermentācijās sasniedzamu acetāta koncentrāciju ietekmi uz šī rauga augšanu un metabolismu. Tika demonstrēta acetāta specifiskā inhibējošā iedarbība uz K. marxianus augšanu un metabolismu, kas izpaužas kā paildzināta lag fāze, lēnāka augšana, samazināts biomasas iznākums, traucēts enerģētiskais metabolisms un substrāta patēriņš, augot uz laktozes un galaktozes. Acetāta negatīvās iedarbības stiprums ir atkarīgs no vides pH un augšanas fāzes, un noteiktos apstākļos šūnas adaptējas augstākai acetāta koncentrācijai.

year	journal	country	edition	language
2015-01-01

https://dspace.lu.lv/dspace/handle/7/30256

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