Carbon sources effects on different strains of phytase producing bacteria isolated from Malaysia’s hot spring
This study aimed to determine the effects of using different carbon sources to the growth of different strains of phytase producing bacteria based on optical density (OD), colony forming unit (CFU), and their phytase production. All four strains of bacteria potentially producing phytase have been...
Saved in:
Main Authors: | , |
---|---|
Format: | Conference or Workshop Item |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | http://eprints.unisza.edu.my/4253/1/FH03-FBIM-21-55808.pdf http://eprints.unisza.edu.my/4253/ |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | This study aimed to determine the effects of using different carbon sources to the growth of different strains
of phytase producing bacteria based on optical density (OD), colony forming unit (CFU), and their phytase
production. All four strains of bacteria potentially producing phytase have been isolated from several hot
springs in Malaysia, which were in Labis, Johor (L3), Dusun Tua, Selangor (RT), Ulu Legong, Kedah (A) and
Ranau, Sabah (B9). The bacteria were grown in nutrient agar (NA) and modified Phytase Screening Medium
(PSM) liquid media for culture enrichment. Glucose and lactose were used as the carbon source and growth
was done under optimum culture conditions (pH 5.5, 37˚C, 200 rpm) for 72 hours through batch culture
method using a shake-flask scale. All experiments were done in triplicates. For quantitative screening of
phytase production, the bacterial cultures were harvested to obtain the supernatants that were used to
measure the amount of inorganic phosphorus released by the bacterial strains. Among these carbon sources,
glucose have shown consistency between their CFU counts and the observed ODs whereas lactose shown
inconsistency. Meanwhile, the maximum phytase activity was recorded for all strains in the presence of
glucose in which bacteria strain L3 (0.040 U/mL), RT (0.036 U/mL), B9 (0.026 U/mL), and A (0.026 U/mL).
As for the overall, strain L3 (from Labis, Johor) gave promising rate of inorganic phosphate released with
optimum phytase activity value of 0.04 U/mL in presence of glucose and lactose. In the future, biochemical
research and molecular identification may also be carried out to identify molecular identity in the strains. This
study can provide an efficient strategy to produce maximum phytase as few studies stated that phytase is an
application tool in functional food production that consists of myo – inositol phosphates that is believed to
have important pharmacological effects. |
---|