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Microbiological Quality Assessment of a Local Milk Product, Kwacha Golla, of Bangladesh
Atiqur Rahman,M. M. Rahman,M. Mashiar Rahman,S. M. Arafat,M. Z. H. Khan,M. S. Rahman 한국응용생명화학회 2008 Journal of Applied Biological Chemistry (J. Appl. Vol.51 No.4
Different types of milk products, such as kwacha golla, mawa, cheese, curd, and chocolate are popular in Bangladesh. However, the microbiological safety of these products is poorly understood. This study was performed to assess the microbiological quality of kwacha golla, a local milk product. Kwacha golla samples were collected from ten different areas of Rajshahi and Kushtia regions, and the quality of the each sample was assessed using various parameters including standard plate count, total coliform, fecal coliform, total fungi, and spore-forming bacteria, as well as food-borne microorganisms. Out of 300 samples, total coliform was detected at 56.66% (n= 300), exceeding the minimum allowable limit of 36.66%. Similarly, experiments were carried out with fungi and food-borne pathogens including Escherichia coli, Listeria monocytogenes, Salmonella sp., and Staphylococcus aureus. Results revealed 85.33, 53, and 49.33% of the samples were contaminated by fungi, E. coli, and L. monocytogenes, respectively. However, all samples showed no contaminations of Salmonella sp. and Staphylococcus sp. Therefore, this study could be helpful to the people of Bangladesh by providing information on the possibility of a major health problem caused by the consumption of kwacha golla. Different types of milk products, such as kwacha golla, mawa, cheese, curd, and chocolate are popular in Bangladesh. However, the microbiological safety of these products is poorly understood. This study was performed to assess the microbiological quality of kwacha golla, a local milk product. Kwacha golla samples were collected from ten different areas of Rajshahi and Kushtia regions, and the quality of the each sample was assessed using various parameters including standard plate count, total coliform, fecal coliform, total fungi, and spore-forming bacteria, as well as food-borne microorganisms. Out of 300 samples, total coliform was detected at 56.66% (n= 300), exceeding the minimum allowable limit of 36.66%. Similarly, experiments were carried out with fungi and food-borne pathogens including Escherichia coli, Listeria monocytogenes, Salmonella sp., and Staphylococcus aureus. Results revealed 85.33, 53, and 49.33% of the samples were contaminated by fungi, E. coli, and L. monocytogenes, respectively. However, all samples showed no contaminations of Salmonella sp. and Staphylococcus sp. Therefore, this study could be helpful to the people of Bangladesh by providing information on the possibility of a major health problem caused by the consumption of kwacha golla.
Microbiological Quality Assessment of a Local Milk Product, Kwacha Golla, of Bangladesh
Rahman, M.M.,Rahman, M.Mashiar,Arafat, S.M.,Rahman, Atiqur,Khan, M.Z.H.,Rahman, M.S. The Korean Society for Applied Biological Chemistr 2008 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.4
Different types of milk products, such as kwacha golla, mawa, cheese, curd, and chocolate are popular in Bangladesh. However, the microbiological safety of these products is poorly understood. This study was performed to assess the microbiological quality of kwacha golla, a local milk product. Kwacha golla samples were collected from ten different areas of Rajshahi and Kushtia regions, and the quality of the each sample was assessed using various parameters including standard plate count, total coliform, fecal coliform, total fungi, and spore-forming bacteria, as well as food-borne microorganisms. Out of 300 samples, total coliform was detected at 56.66% (n= 300), exceeding the minimum allowable limit of 36.66%. Similarly, experiments were carried out with fungi and food-borne pathogens including Escherichia coli, Listeria monocytogenes, Salmonella sp., and Staphylococcus aureus. Results revealed 85.33, 53, and 49.33% of the samples were contaminated by fungi, E. coli, and L. monocytogenes, respectively. However, all samples showed no contaminations of Salmonella sp. and Staphylococcus sp. Therefore, this study could be helpful to the people of Bangladesh by providing information on the possibility of a major health problem caused by the consumption of kwacha golla.
Analgesic and anti-inflammatory activities of Alocasia indica (Roxb.) Schott
Atiqur Rahman,M. Solaiman,Ekramul Haque,A. K. Das 경희대학교 융합한의과학연구소 2011 Oriental Pharmacy and Experimental Medicine Vol.11 No.3
The ethanol extract of the dried rhizome of Alocasia indica (Roxb.) Schott. (Family - Araceae) was investigated for its possible analgesic and antiinflammatory activities in animal models. The extract showed significant (P<0.001) writhing inhibition in acetic acid-induced writhing in mice at the oral dose of 300 and 600 mg/kg of body weight comparable to the standard drug diclofenac sodium at the dose of 25 mg/kg of body weight. Moreover, when given orally to rats at dose of 300 and 600 mg/kg of body weight, the extract showed a significant (P<0.001) anti-inflammatory activity against carrageenin induced paw edema in rats which was comparable to the standard drug aspirin at the dose of 150 mg/kg of body weight. The overall results tend to suggest the analgesic and anti-inflammatory activities of the crude ethanolic extract of dried rhizome of Alocasia indica (Roxb.) Schott. The obtained results provide a support for the use of this plant in traditional medicine and its further investigation.
Rahman, Atiqur,Al-Reza, Sharif M,Yoon, Jung In,Kang, Sun Chul John Wiley Sons, Ltd. 2009 Journal of the Science of Food and Agriculture Vol.89 No.5
<P>BACKGROUND:Poncirus trifoliata Rafin. is widely used in oriental medicine because of its beneficiary effects on health. In this study, we examined the chemical compositions of the volatile oil isolated from the seeds of P. trifoliata by hydrodistillation, and tested the efficacy of the oil and various organic extracts as an antibacterial potential against a panel of foodborne pathogens.</P><P>RESULTS: The hydrodistilled volatile oil was analysed by GC–MS. Thirty-six compounds representing 90.67% of the total oil were identified, of which veridiflorol, spathulenol, α-humulene, α-cadinol, δ-cadinene, T-muurolol, hexadecanoic acid, germacrene D, bergaptene and aromadendrene were the major volatile compounds. The oil and the organic extracts of chloroform, ethyl acetate and methanol revealed a remarkable antibacterial effect against the tested pathogens such as Staphylococcus aureus, Bacillus subtilis, Listeria monocytogenes, Pseudomonas aeruginosa, Enterobacter aerogenes, Salmonella typhimurium, S. enteritidis and Escherichia coli. Also, the oil had strong detrimental effect on the viable count of the tested bacteria.</P><P>CONCLUSION: Our findings demonstrate that the oil and organic extracts derived from P. trifoliata seeds might be a potential source of a preservative for the food or pharmaceutical industries. Copyright © 2009 Society of Chemical Industry</P>
Rahman, Atiqur,Bajpai, Vivek K.,Dung, Nguyen Thi,Kang, Sun Chul Blackwell Publishing Ltd 2011 International journal of food science & technology Vol.46 No.6
<P><B>Summary</B></P><P>Antibacterial and antioxidant potential of essential oil, extract and its fractions of <I>Bidens frondosa</I> Linn were evaluated. Sixty‐one components representing 95.41% of the total oil were identified. The essential oil (7.5 μL disc<SUP>−1</SUP>), methanol extract and its different organic subfractions (0.5 μg disc<SUP>−1</SUP>) of <I>B. frondosa</I> displayed a great potential of antibacterial activity against <I>Staphylococcus aureus</I> (ATCC 6538 and KCTC 1916), <I>Listeria monocytogenes</I> ATCC 19116, <I>Bacillus subtilis</I> ATCC 6633, <I>Pseudomonas aeruginosa</I> KCTC 2004, <I>Salmonella enteritidis</I> KCTC 12021 and <I>Enterobacter aerogenes</I> KCTC 2190. Antioxidant activity was evaluated by using 1,1‐diphenyl‐2‐picrylhydrazyl (DPPH) assay. The free radical scavenging activity of ethyl acetate (EtOAc) fraction was superior to all other fractions (IC<SUB>50</SUB> = 11.96 μg mL<SUP>−1</SUP>), which was higher than synthetic antioxidant butylated hydroxyanisole, (IC<SUB>50</SUB> = 18.27 μg mL<SUP>−1</SUP>). Furthermore, the amount of total phenolic compounds was determined and its content in EtOAc fraction was the highest as compared to methanol extract or other fractions. The results indicate that the oil and extracts of <I>B. frondosa</I> could serve as an important bio‐resource of antimicrobial agents and antioxidants for using in the food industries.</P>