scholarly journals Effects of temperature and neutralizing agent on lactic acid production by Rhizopus sp. fermentation

2021 ◽  
Author(s):  
Whiny Erliana ◽  
Tri Widjaja ◽  
Tectona Indah ◽  
Daryl Susilo ◽  
Annisa Dewi
Keyword(s):  
Lactic Acid ◽  
Acid Production ◽  
Lactic Acid Production ◽  
Neutralizing Agent ◽  
Effects Of Temperature ◽  
Rhizopus Sp

scholarly journals CO-PRODUCTION OF LACTIC ACID AND ETHANOL USING RHIZOPUS SP. FROM HYDROLYZED INEDIBLE CASSAVA STARCH AND LEAVES

2016 ◽  
Vol 17 (2) ◽  
pp. 1-10 ◽  
Author(s):  
Azlin Suhaida Azmi ◽  
Nurlisa Yusuf ◽  
Dzun Noraini Jimat ◽  
Noor Illi Mohamad Puad
Keyword(s):  
Lactic Acid ◽  
Acid Production ◽  
Lactic Acid Production ◽  
Cassava Starch ◽  
Optimum Conditions ◽  
Glucose Yield ◽  
Cassava Leaves ◽  
Ethanol Yields ◽  
Rhizopus Sp ◽  
Hydrolysis Of

Production of lactic acid and ethanol from inedible cassava starch and leaves was investigated. Prior to fermentation, hydrolysis of the starch and leaves was conducted. Hydrolysis was optimized by manipulating at three levels each four particular factors, namely acid concentration, starch concentration, temperature, and reaction time. Maximum glucose yield of 0.96 g/g was obtained when 2.5% (w/v) of cassava leaves with 2.5% (w/v) of starch was hydrolyzed using 0.20 M of nitric acid at 160oC of temperature for 10 min. The potential of hydrolyzed cassava starch and leaves was then investigated for lactic acid production using fungal Rhizopus sp. The fermentation process was then conducted in shake flask by varying four factors at three levels each. Maximum lactic acid and ethanol yields of 0.95 g/g and 0.52 g/g, respectively, were achieved at different optimum conditions.  Lactic acid production was found to be linked to a decrease in ethanol production. Design Expert v6.0.8 was used to aid in the design of the experiment using Taguchi’s methodology.

Scale-up of L-lactic acid production by mutant strain Rhizopus sp. MK-96-1196 from 0.003 m3 to 5 m3 in airlift bioreactors

2006 ◽  
Vol 101 (1) ◽  
pp. 9-12 ◽  
Author(s):  
Tiejun Liu ◽  
Shigenobu Miura ◽  
Masaaki Yaguchi ◽  
Tomohiro Arimura ◽  
Enock Y. Park ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Mutant Strain ◽  
Acid Production ◽  
Lactic Acid Production ◽  
Scale Up ◽  
Airlift Bioreactors ◽  
Rhizopus Sp

l-Lactic acid production benefits from reduction of environmental osmotic stress through neutralizing agent combination

2014 ◽  
Vol 37 (9) ◽  
pp. 1917-1923 ◽  
Author(s):  
Xiwei Tian ◽  
Yonghong Wang ◽  
Ju Chu ◽  
Yingping Zhuang ◽  
Siliang Zhang
Keyword(s):  
Lactic Acid ◽  
Osmotic Stress ◽  
Acid Production ◽  
Lactic Acid Production ◽  
Neutralizing Agent

scholarly journals Protective effect of titanium tetrafluoride and silver diamine fluoride on radiation-induced dentin caries in vitro

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Beatriz Martines de Souza ◽  
Mayara Souza Silva ◽  
Aline Silva Braga ◽  
Patrícia Sanches Kerges Bueno ◽  
Paulo Sergio da Silva Santos ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Protective Effect ◽  
Acid Production ◽  
Lactic Acid Production ◽  
Negative Control ◽  
Titanium Tetrafluoride ◽  
Silver Diamine Fluoride ◽  
Dentin Caries ◽  
Radiation Induced

AbstractThis in vitro study evaluated the protective effect of titanium tetrafluoride (TiF4) varnish and silver diamine fluoride (SDF) solution on the radiation-induced dentin caries. Bovine root dentin samples were irradiated (70 Gy) and treated as follows: (6 h): 4% TiF4 varnish; 5.42% NaF varnish; 30% SDF solution; placebo varnish; or untreated (negative control). Microcosm biofilm was produced from human dental biofilm (from patients with head-neck cancer) mixed with McBain saliva for the first 8 h. After 16 h and from day 2 to day 5, McBain saliva (0.2% sucrose) was replaced daily (37 °C, 5% CO2) (biological triplicate). Demineralization was quantified by transverse microradiography (TMR), while biofilm was analyzed by using viability, colony-forming units (CFU) counting and lactic acid production assays. The data were statistically analyzed by ANOVA (p < 0.05). TiF4 and SDF were able to reduce mineral loss compared to placebo and the negative control. TiF4 and SDF significantly reduced the biofilm viability compared to negative control. TiF4 significantly reduced the CFU count of total microorganism, while only SDF affected total streptococci and mutans streptococci counts. The varnishes induced a reduction in lactic acid production compared to the negative control. TiF4 and SDF may be good alternatives to control the development of radiation-induced dentin caries.

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