ISPUB.COM. Microbiological Quality Of Sweetmeat With Special Reference To Staphylococci. S Chakraborty, A Pramanik, A Goswami, R Ghosh, S Biswas
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1 ISPUB.COM The Internet Journal of Microbiology Volume 1 Number 1 Microbiological Quality Of Sweetmeat With Special Reference To Staphylococci S Chakraborty, A Pramanik, A Goswami, R Ghosh, S Biswas Citation S Chakraborty, A Pramanik, A Goswami, R Ghosh, S Biswas. Microbiological Quality Of Sweetmeat With Special Reference To Staphylococci. The Internet Journal of Microbiology Volume 1 Number 1. Abstract INTRODUCTION Safe food production in countries like India is based in the use of preventive measures such as the use of safe raw materials, application of good manufacturing practices, and application of Hazard Analysis of Critical Control point (HACCP) procedures. Adequate consumer protection can be achieved by measuring the microbiological data of end product. To improve the microbiological quality of Sandesh and Kalakand precaution against contamination must be taken at different Critical Control Points (Roy et al., 1998). Some strains of Staphylococcus aureus are gaining entry into milk products and caus acute gastroenteritis via the production of heat stable enterotoxins. Millions of people are the victims of food borne illnesses resulting from toxins produced by Staphylococcus aureus ingested with food. Coliforms have probably got more attention than most other groups of bacteria on account of their importance as indicator organism for predicting unhygienic conditions during production and processing. Among the coliforms, Escherichia coli has attracted much attention as suspected to be associated with outbreaks of gastro-enteritis and food poisoning in human beings. Keeping in view the public health importance of sweetmeat consumers it is needless to say that the product should be prepared hygienically reducing the microbial load present in it. Therefore an attempt was made to research the hygienic measures adopted by the food handlers and makers during sweetmeat preparation and their reflection in the microbiological quality of the sweetmeat. makers and 11 handlers in urban areas and 28 makers and 2 handlers in rural areas were selected. Face to face interviews were conducted using a structured questionnaire. Standard Plate Count and coliform count for each sample was carried out according to the procedures prescribed in IS (1981) SP: 18(Part XI). ISI, Handbook of Food analysis and dairy products. Morphological characterization, identification and biochemical characterization of Staphylococcus species were done as per the method outlined by IS (1980) SP: 18(Part I) ISI, Hand book of Food analysis and dairy products. RESULTS AND DISCUSSION From table 1 it is evident that the result is the same in both the areas regarding wearing apron and gloves' during sweetmeat preparation. None of the respondents (100%) did wear apron and gloves during preparation. Therefore, the sweets became more prone to contamination by pathogenic organisms. MATERIALS AND METHODS The respondents were drawn randomly for each category of akers and handlers from the randomly selected shops for each sample (Sandesh and Kalakand) in both rural and urban areas. Following aforesaid manner of methodology, 19 1 of 7
2 Figure 1 Figure 2 Table 1a: Table showing the frequency of respondents who adopted hygienic management during Sweetmeat (Sandesh and Kalakand) preparation. Figure 3 Table 1b: Table showing the frequency of respondents who adopted hygienic management during Sweetmeat (Sandesh and Kalakand) preparation. 2 of 7
3 Figure 4 hygienic measure was more common in urban areas compared to rural areas. It is clear that most of the urban sweet shops (80% in Sandesh) have a fly proof arrangement. But in rural area the picture is different. Here, only 53.33% of the sweet shops have fly proofing arrangements. From this we can conclude that fly proof systems can protect the sweets from getting contaminated which happens more frequaently in rural areas than urban areas. All the sweet trays (100%) are cleaned everyday in urban areas in both Sandesh and Kalakand. But in rural areas it was lowest with 66.67% Kalakand. It can be concluded that urban respondents maintain more hygienic measures to keep the sweets. In regard to cutting finger nails' urban respondents did it more regular than the rural respondents. In rural areas, 86.67% and 73.33% of the respondents engaged in Sandesh and Kalakand preparation respectively and do not cut their nails regularly. This potentially increases the contamination of sweets. During the time of preparation, the product was not tested in rural areas (100%) but in urban areas some respondents (Kalakand 26.67%, Sandesh 13.33%) tested their product during preparation which is an unhygienic habit. In investigating spitting habits, the rural respondents spit more frequently than urban respondents. The spitting incidence was highest (53.33%) in Kalakand preparations in the rural areas. The habit of tobacco consumption was mostly high in urban areas and it was highest (60%) in Sandesh. In rural areas, it was moderately low and in Sandesh it was 13.33%. It can be concluded that the urban respondents are more unhygienic in terms of habit of tobacco consumption. It is evident that most of the respondents in both areas touch other body parts during preparation of sweetmeat. But wat is higher in urban areas (93.33%) and lowest in rural areas (60%). It is a very unhygienic habit which increases the microbial load during preparation. Hand washing before starting the preparation was highest in urban areas (86.67%). But it was very low in rural areas. In Sandesh it was 13.33%. We can conclude that this good 3 of 7 Rodents are found in all shops in rural areas (100%) in both Sandesh and Kalakand. But in urban areas there are few shops that are rodents free. From this we can conclude that better hygienic condition in this regard is maintained in urban areas than in rural areas. It is clear that in rural areas most shops use their own raw materials (100%) in the sweets. But in urban areas it is lower because they use raw materials from outside and it is maximum (98.33%) in Kalakand. Use of own raw material is a good hygienic practice which is more often used in rural areas than in urban. The coliform and Standard Plate Counts of Kalakand and Sandesh samples are shown in tables 2 & 3. The tables depicted a significant difference in coliform count in the samples of rural and urban Kalakand. The average count in urban and rural samples was X 10 2 c.f.u/ gm and X 10 c.f.u/ gm respectively. Dwarkanath and Srikanta (1977) reported the coliform count of 4 c.f.u/ gm in the Kalakand sample. Here, the study is showing higher count due to unhygienic condition during preparation, contamination from water, equipments, soil, personnel and more materials etc.
4 Figure 5 Figure 6 Table 2: Table showing Coliform and Standard Plate Count for Kalakand and Sandesh in Rural and Urban areas. Figure 7 Table 3: Table showing mean along with standard error of coliform count and standard plate count of Sandesh and Kalakand in urban and rural areas. The table also depicted that the average coliform in urban 4 of 7
5 and rural Sandesh samples were c.f.u/ gm and c.f.u/ gm respectively. Misra and Kulia (1988) reported the coliform count ranging between 10 c.f.u/ gm to c.f.u/ gm in Sandesh samples. Figure 8 Table 4: Table showing colony characters and results of biochemical tests of coagulase Staphylococcus positive isolates collected from Sandesh and Kalakand. A significant difference in SPC of various Kalakand samples was observed between urban and rural areas. The average SPC in urban and rural Kalakand sample was 1.37 X 10 5 c.f.u/ gm and 3.82 X 10 5 c.f.u/ gm respectively. Singh et al. 4 (1975) reported SPC of 1.8 X 10 c.f.u/ gm and Reddy et al. (1983) reported SPC of 5 X 10 3 c.f.u/ gm to 2.1 X 10 5 c.f.u/ gm in Hissar market Khoa sample. An insignificant difference in SPC of various Sandesh samples of urban and rural areas was observed. The average SPC in urban and rural Sandesh samples was 2.1 X c.f.u/ gm and 94.6 X 10 c.f.u/ gm respectively. Sen and Rajorhia (1989) reported that the product (Sandesh) showed 5 7 the count 3 X 10 c.f.u/ gm to 7.5 X 10 c.f.u/ gm. 47 coagulase positive strains of staphylococci isolated from both the sweets (Kalakand and Sandesh) were examined to determine their physiological characters i.e. pigment production and biochemical properties. For this purpose, isolates were subjected to various biochemical tests, the results of which are shown in table 4. On observation of colony character it was found that majority of coagulase positive isolates showed lemon yellow pigments which was highest in rural Kalakand (70%). In case of biochemical properties, all coagulase positive isolates were negative for Indole test. The majority was positive for methyl red (highest- 100% in case of Rural Sandesh) and 100% were positive for Voges-proskauer. In sugar fermentation, all coagulase positive isolates were negative for salicin and the majority was positive for lactose, mannitol, maltose, sucrose as shown in the table 5. From above observations it can be confirmed that the organisms were staphylococci. 5 of 7
6 Figure 9 Table 5: Table showing the number of coagelase positive strains of Staphylococcus fermenting various sugars. From the table 6 it is evident that out of 15 Kalakand samples of urban and rural areas 12 (80%) and 10 (66.66%) were coagulase positive respectively. The higher count of coagulase positive Staphylococci in Sandesh than Kalakand may be due to the fact that Kalakand is supported by high level of heat treatment, low moisture and high sucrose contents. This fact is confirmed by Sen and Rajorhia (1989). The table also showed that all the Kalakand and Sandesh samples of both urban and rural areas were staphylococcus positive. Figure 10 Table 6: Table showing sample wise percentage positivity of coagulase test on samples collected from Sandesh and Kalakand. Table 7 shows the number of coagulase positive strains of Staphylococcus that exhibited reaction on variable period of incubation. From the table it is also clear that most of the coagulase positive strains of Staphylococcus exhibited 6 of 7 reaction in 4 hrs incubation at 37 0 C temperature. Figure 11 Table 7: Table showing the number of coagulase positive strain of Staphylococcus on variable periods of incubation ACKNOWLEDGEMENT The authors acknowledge the researchers of Institute of Animal Health & Veterinary Biologicals, Govt. of West Bengal for their cooperation during the biochemical testing. References 1. Roy R, Chakrabarti J and Gandhi S R 1998 Microbiological quality assurance of milk sweets (Sandesh and Kalakand) by HACCP; Indian Dairyman. 50: IS 1981 SP: 18 Part XI ISI, Handbook of Food analysis and dairy products; Indian Standard Institution. Manak Bhawan, New Delhi. 3. IS 1980 SP: 18 Part I ISI, Handbook of Food analysis and dairy products; Indian Standard Institution. Manak Bhawan, New Delhi. 4. Dwarakanath C T and Srikanta S 1977 Studies on the microbiological quality of traditional Indian sweetmeat products; Journal of Food Science Technology. 14(5): Misra K A and Kulia K R 1988 Microbiological quality of Burfi and sandesh; Asian Journal of Dairy Research. 7(1): Singh K, Ogra L J and Rao S Y 1975 Observation on the microbial quality of some indigenous concentrated milk products; Indian Journal of Dairy Science. 28: Reddy G R, Reddy K S, Mandokhot U V and Chandiramani N K 1983 Survey and growth of microflora in Khoa at different storage conditions, proceedings of the symposia on biology of virus, plasmids and biotechnology; Microorganisms in Agriculture and Ecology. 24th Annual conference of Association of Microbiologist of India, Hyderabad. Nov Sen C D and Rajorhia S G 1989 Quality characteristics of Sandesh marketed in Calcutta; Indian Journal of Dairy Science. 42(2):
7 Author Information S. Chakraborty, M. V. Sc. Dept. of Vety. Public Health, West Bengal University of Animal & Fishery Sciences A. K. Pramanik, Ph.D. Dept. of Vety. Public Health, West Bengal University of Animal & Fishery Sciences A. Goswami, Ph.D. Dept. of Vety. & A. H., West Bengal University of Animal & Fishery Sciences R. K. Ghosh, M. V. Sc. Dept. of Vety. & A. H., West Bengal University of Animal & Fishery Sciences Sukanta Biswas, M. V. Sc. Dept. of Vety. & A. H., West Bengal University of Animal & Fishery Sciences 7 of 7
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