Camembert is a type of surface-mold-ripened soft cheese traditionally produced from cow’s milk. Buttermilk, a by-product of butter production with beneficial nutritional and technological properties, is increasingly being used in various applications, including cheesemaking. Therefore, this study aimed to use sweet buttermilk (BM) in combination with milk at concentrations of 10% (w/w) (BM10) and 20% (w/w) (BM20) for the production of Camembert-type cheese. A control cheese made entirely from milk was also produced. The cheese samples underwent a 28-day ripening process during which their composition, acidity, water activity, color, and sensory properties were examined at 1-week intervals. The microstructure of the matured Camembert-type cheese samples was analyzed using scanning electron microscopy (SEM), and their texture was evaluated. The production yield of BM20 cheese (18.03 ± 0.29 kg/100 kg) was lower (p < 0.05) than that of the control (19.92 ± 0.23 kg/100 kg), with BM10 showing the distinctly lowest yield (14.74 ± 0.35 kg/100 kg). The total solid and fat content of BM Camembert-type cheese samples was lower than the control. However, the total protein content in cheese BM20 at the end of the ripening period was the same as that of the control. The changes in acidity in all samples were typical for Camembert cheese, and water activity was high (above 0.92). The sensory properties of all samples were characteristic of the cheese type, while the color of BM cheese samples differed from the control. The microstructure of BM10 and BM20 cheese variants was similar, namely homogenous and less porous compared to the control. In terms of texture, the BM samples had significantly lower hardness, adhesiveness, and gumminess. This study indicates that sweet BM, particularly at a concentration of 20%, may be effectively used in the production of Camembert-type cheese.

Celiac disease is an autoimmune disease with manifestations at different levels. It is a disease developed in people with genetic susceptibility and intolerance to certain protein fractions of gluten, a protein found in all forms of wheat, rye and barley and causing villus atrophy. In Algeria, more than 500 000 people have celiac disease and the only treatment for celiac disease is to follow a strict, lifelong gluten-free diet, the objective of our work is to study the eating habits and gluten-free diet of 109 celiac patients residing in Algeria. We carried out a cross-sectional survey using a questionnaire that has two sections: a section on eating habits, a section on frequencies of food consumption. Overall, we found that 67.9% of patients strictly followed their diet which led to difficulty in eating out of home and the need to take food while traveling. The difficulties in purchasing gluten-free foods were also mentioned by most patients. In addition, the gluten-free diet interfered with the patients' ability to work and with their social activities. Regarding the diet of our patients, the main foods consumed were vegetables, fruits, pulses, rice, pancakes, eggs, chicken meat and milk. The negative effects of celiac disease and the gluten-free diet on patients can be minimized by better patient management, especially by joining associations. The Institute of Nutrition, Food and Agri-Food Technologies, Hospital-University Center CONSTANTINE Benbadis polyclinic el arbi ben mhidi, Polyclinic Filali, Constantine SIDI MABROUK PIDIATRIC EHS Constantine Hospitals.