Stimulation of protein secretion in Trichoderma reesei by Tween surfactants is not correlated with changes in enzyme localization or membrane fatty acid composition

Panda, T.

doi:10.1016/0378-1097(87)90288-6

Cited by 3 publications

(4 citation statements)

References 13 publications

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“…2003). Panda et al . (1987) reported that the stimulation of enzymatic protein secretion by the surfactant did not involve changes in membrane fatty acid of the microorganisms or release of their surface bod enzymes.…”

Section: Discussionmentioning

confidence: 99%

“…However, increased enzyme activities of in vitro rumen culture by Tween 80 could be less associated with the increased population density of rumen microorganisms, because adding surfactant Tween 80 has only minor effects on the growth of rumen cellulolytic bacteria Butyrivibrio fibrisolvens, Ruminococcus albus, Fibrobacta succinogenes and Ruminococcus flavefaciens (Goto et al 2003a;. Panda et al (1987) reported that the stimulation of enzymatic protein secretion by the surfactant did not involve changes in membrane fatty acid of the microorganisms or release of their surface bound enzymes.…”

Section: Discussionmentioning

confidence: 99%

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Pretreatment of surfactant Tween 80 and fibrolytic enzyme influencing volatile fatty acid and methane production of a total mixed ration by mixed rumen microorganisms at in vitro

et al. 2005

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In vitro rumen dry matter degradability, volatile fatty acid (VFA) and methane production were examined in a total mixed ration pretreated with different levels of either commercial cellulolytic enzyme (CCE), the surfactant poly oxyethylene sorbitan monoolate (Tween 80) or both: (i) no pretreatment (Control); (ii) with 1% CCE alone; (iii) with 2% CCE alone; (iv) with 1% Tween 80 alone; (v) with 1% Tween 80 + 1% CCE;(vi) with 1% Tween 80 + 2% CCE; (vii) with 2% Tween 80 alone; (viii) with 2% Tween 80 + 1% CCE; and (ix) with 2% Tween 80 +2% CCE. In all culture supernatants of rumen microorganisms, activities of xylanase and cellulase were significantly (P < 0.001) increased with pretreatment of CCE alone, Tween 80 alone and both combined. Within the same treatment of no CCE and 1% CCE levels, the total VFA concentration was significantly (P < 0.001) higher with 2% Tween 80 than with no or 1% Tween 80 treatments. The molar percentage of propionate significantly (P < 0.001) increased only with Tween 80. Throughout the in vitro incubation, the average value of methane concentration decrease was greater (P < 0.001) with 1% CCE treatment than with no CCE and 2% CCE treatments, accounting for 0.797 and 0.887 of no CCE and 2% CCE treatments, respectively. Accumulative methane production was significantly lower with 1% CCE treatment than with no CCE and 2% CCE treatments. A ratio of VFA : methane production was significantly (P < 0.001) higher with 2% Tween 80 treatment than with no Tween 80 and 1% Tween 80 treatments, showing the average values of 7.28, 5.33 and 6.69, respectively.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Pretreatment of surfactant Tween 80 and fibrolytic enzyme influencing volatile fatty acid and methane production of a total mixed ration by mixed rumen microorganisms at in vitro

et al. 2005

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“…However, the mechanism for stimulation of protein secretion by Tween surfactants in filamentous fungi appears to be complicated. Thus, Panda et al (1987) concluded that the stimulation of protein secretion in Trichoderma reesei by Tween surfactants does not involve release of surface bound enzymes or changes in membrane fatty acid unsaturation.…”

Section: Discussionmentioning

confidence: 99%

Extracellular and cell-bound lipase activity in relation to growth of Geotrichum candidum

Jacobsen

Jensen

Olsen

et al. 1989

Appl Microbiol Biotechnol

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“…Lipids were removed as described by Bligh and Dyer 3, and the remaining residue was dissolved in a known volume of an ethanol-water mixture at pH 5.0 (adjusted with dilute HCI) and kept at 4°C. The residue was found to be free of carbohydrates (analyzed by the dinitrosalicylic acid method [11] after acid hydrolysis), proteins (4), and lipids (16).…”

mentioning

confidence: 99%

Method To Estimate Growth of Trichoderma reesei and Aspergillus wentii in Mixed Culture on Cellulosic Substrates

Panda

Bisaria

Ghose

1989

Appl Environ Microbiol

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Stimulation of protein secretion in Trichoderma reesei by Tween surfactants is not correlated with changes in enzyme localization or membrane fatty acid composition

Cited by 3 publications

References 13 publications

Pretreatment of surfactant Tween 80 and fibrolytic enzyme influencing volatile fatty acid and methane production of a total mixed ration by mixed rumen microorganisms at in vitro

Pretreatment of surfactant Tween 80 and fibrolytic enzyme influencing volatile fatty acid and methane production of a total mixed ration by mixed rumen microorganisms at in vitro

Extracellular and cell-bound lipase activity in relation to growth of Geotrichum candidum

Method To Estimate Growth of Trichoderma reesei and Aspergillus wentii in Mixed Culture on Cellulosic Substrates

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