RESULTS: We found that none of the monosaccharides that make up the plant cell wall polysaccharides specifically inhibit Salmonella attachment to the bacterial cellulose-based plant cell wall models. Confocal laser scanning microscopy showed that Salmonella cells can penetrate and attach within the tightly arranged bacterial cellulose network. Analysis of images obtained from atomic force microscopy revealed that the bacterial cellulose-pectin-xyloglucan composite with 0.3 % (w/v) xyloglucan, previously shown to have the highest number of Salmonella cells attached to it, had significantly thicker cellulose fibrils compared to other composites. Scanning electron microscopy images also showed that the bacterial cellulose and bacterial cellulose-xyloglucan composites were more porous when compared to the other composites containing pectin.
CONCLUSIONS: Our study found that the attachment of Salmonella cells to cut plant cell walls was not mediated by specific carbohydrate interactions. This suggests that the attachment of Salmonella strains to the plant cell wall models were more dependent on the structural characteristics of the attachment surface. Pectin reduces the porosity and space between cellulose fibrils, which then forms a matrix that is able to retain Salmonella cells within the bacterial cellulose network. When present with pectin, xyloglucan provides a greater surface for Salmonella cells to attach through the thickening of cellulose fibrils.
Materials and Methods: A cross-sectional study was designed, and a self-administered questionnaire was distributed to 106 respondents. The survey comprised four sections including sociodemographic, knowledge, attitude, and practice.
Results: Total percentage scores for KAP for FH were 86.06%, 32.40%, and 19.91%, respectively, whereas the KAP scores for DS were 89.36%, 34.26%, and 19.94%, respectively. This study revealed that the respondents had good knowledge but poor attitude and practice toward FP. Total mean percentage of KAP scores for DS was higher than FH. Besides, no significant difference was observed in KAP toward FP across different genders, age, education, and income levels among FH. However, for DS, significant difference (p = 0.008) was observed in knowledge toward FP between genders. Significant association (p = 0.048) was also reported in practice toward FP with age among DS. This study also found a significant association between knowledge and attitude (p = 0.032) and knowledge and practice (p = 0.017) toward FP among FH.
Conclusion: Nevertheless, among DS, no significant association was observed between knowledge, attitude and practice toward FP. The findings may help them to plan effective methods to promote better understanding about FP and improving their knowledge and awareness.