The effect of sapropel extracts on microflora and physicochemical parameters of Dried Distillers’ Grain
Laen...
Kuupäev
2018
Kättesaadav alates
Autorid
Nsengumuremyi, D.
Barakova, N.V.
Romanov, V.A.
Mityukov, A.S.
Guzeva, A.V.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
This article is devoted to the effect of ultradispersed humate sapropel extracts, obtained
from air
-
dry samples of sapropel, from Seryodka deposit (Pskov region, Russia) by alkaline
extraction under the action of ultrasonic radiation, on microbial and phys
icochemical parameters
of Distillers’ grain (DG) during storage. At the end of the
distillation
,
wet
DG was divided and
treated with sapropel extract. The untreated sample served as a control. Both (treated and
untreated
) were then dried to 10%
moisture
content
. Microbial and physicochemical parameters
(moisture content, pH,
titrable
acidity (TA),
acid value (AV)
of fats) were assessed before storage
of dried DG.
A similar experiment
was
repeated
after one week of storage but on microbial load.
The microb
ial counts ranged from
2.3
×
10
4
CFU
g
1
(untreated) to 1.77
×
10
4
CFU
g
-
1
(treated)
before storage while 2.5
×
10
4
CFU
g
-
1
to 2.18
×
10
4
CFU
g
-
1
accounted for
after
a
week of
storage.
The pH had increased from 4.5
±
0.1 to 6.1
±
0.1 before and after treatm
ent respectively.
TA likewise decreased from 3.2
±
0.4 to 2.03
±
0.06%. The results showed that sapropel extracts
had
effects
on microflora and physicochemical parameters of DDG.
Kirjeldus
Article
Märksõnad
grains, pH, acid value, microflora, humic acid, fungicidal properties, articles