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The consumption of juice has increased sharply in recent years in Lubumbashi. The objective of this study was to determine the standards applicable to the types of juice for domestic consumption in Lubumbashi. A descriptive cross-sectional study on quality control (QC) of ten brands of juice selected from around thirty listed on the Lubumbashi markets focused on the determination of different physico-chemical and microbiological parameters. Physical analysis of the juices was carried out in the laboratory of the Congolese Office of Control (OCC) in February 2019. It appears that five samples, or 25%, have a density lower than the ISO 9001 standard. All the samples have a Brix Degree in accordance with French standards applicable by the Congolese control office. The chemical analysis shows that 4 samples, or 20%, have a pH < 4, therefore higher than the prescribed standards. As for the titratable acidity and the formaldehyde index, all the samples have values within normal limits. On the other hand, the glucose level of all the samples is abnormally high (≥40 g/L). The sucrose level of 50% of the samples is normal (≥80 g/L). Microbiological analysis revealed that certain juices were without preservatives and harbored aerobic mesophilic germs (10%), lactic bacteria (20%) yeasts and molds (10%). It is urgent that the public authorities bring all the producers to respect the standards in order to protect the health of the populations.

The objective of this study was to describe the state of the scene of senile dementia in an intra-institutional environment in the city of Lubumbashi. We conducted a descriptive cross-sectional study, over a period of three months, from February 20 to May 20, 2016. The study population is made up of the residents of the 9 retirement institutions for senior citizens (old people's home) which counts the city of Lubumbashi. Participation was voluntary with informed consent duly signed by the patient. The probable cases of dementia were detected through the CSI-D and the 5-word test. A predominance of Alzheimer's was noted (76.92%) and most of them were widowed (69.23%). The mean age of the dementia population was 76.46 ± 9.87 years, while (69.23%) of the patients were out of school. In (23.08%) cases demented patients were male, with a sex ratio of 0.3. Nearly (46.15%) of the demented were drinking. It appears that (69.23%) of the dementias were hypertensive. There are associations between different risk factors and the presence of dementias. Alcohol with an OR (Odd Ratio) = 0.08 (95% CI [0.01-0.72], p < 0.05). In our environment, our results indicate a different situation with a much higher prevalence.

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Background: The lack of knowledge of the biochemical processes in the treatment process of Lutuku constitutes a real problem. The study compares the enzymatic activity of transaminases in consumers of native Lutuku alcohol and non-consumers.Methods: This is a case-control study involving 40 Lutuku-consuming and healthy subjects. The enzymatic activities of GOT and GTP were performed using standard clinical chemical methods developed by BIOLAB.Results: The rate of TGO and TGP are 4 to 5 times higher in consumers of Lutuku than in healthy subjects. In the control group, the median TGO/TGP serum ratio was more pronounced in women (0.9667 U/l) than in men (0.88 U/l). Female alcoholics had a serum TGO/TGP ratio of 1, while males had a median ratio of 1.0275. Serum GOT/GTP ratios were correlated with serum GOT in both sex with respectively (r = 0.268 , p < 0.01) in men and (r= 0.499, p < 0.05) in women; and GTP (r = 0.236 , p < 0.01 ) only in men.Conclusion: Consumption of Lutuku induced four to five times more transaminase activities (TGO and TGP) compared to those observed in healthy.