Green coffee bean extract attenuates gentamicin induced acute nephrotoxicity in rats

Gentamicin induced acute nephrotoxicity (GIAN) is considered as one of the important causes of acute renal failure. In recent years’ great effort has been focused on the introduction of herbal medicine as a novel therapeutic agent for prevention of GIAN. Hence, the current study was designed to investigate the effect of green coffee bean extract (GCBE) on GIAN in rats. Results of the present study showed that rat groups that received oral GCBE for 7 days after induction of GIAN (by a daily intraperitoneal injection of gentamicin for 7days), reported a significant improvement in renal functions tests when compared to the GIAN model groups. Moreover, there was significant amelioration in renal oxidative stress markers (renal malondialdehyde, renal superoxide dismutase) and renal histopathological changes in the GCBE-treated groups when compared to GIAN model group. These results indicate that GCBE has a potential role in ameliorating renal damage involved in GIAN.

Application of colour, shape, and texture parameters for classifying the defect of Gayo Arabica green coffee bean using computer vision

Coffee is the most important commodity in the trading industry. Determination of the quality of coffee is still done manually so that it cannot separate good quality coffee beans with bad quality coffee beans. This research conducted the development of a visual-based intelligent system using computer vision to be able to classify the quality of rice coffee based on the Indonesian National Standard (SNI). The models used in the study are the K-Nearest Neighbour (K-NN) method and the Support Vector Machine (SVM) method with 13 parameters used such as; area, contrast, energy, correlation, homogeneity, circularity, perimeter, and colour index R(red), G (green), B (blue), L*, a* and b*. A total of 1200 Arabica green coffee bean captured using Kinect V2 camera with training data of 1000 samples and testing data of 200 samples.

Environmental origin classification of coffee beans using infrared spectroscopy

Coffee is one of tropical agricultural products cultivated in many counties and consumed by people worldwide. The main purpose of this study is to employ the infrared spectroscopy technique to rapidly classify the environmental origins of green coffee bean samples. To achieve this purpose, diffuse reflectance spectral data of coffee samples were collected and acquired in wavelength rang of 1000 – 2500 nm. Classification models were established using principal component analysis (PCA) combined with linear discriminant analysis (LDA). The result showed that coffee bean sample can be classified based on their environmental origins with maximum total explained variance of the first two principal components is 97% (PC1 87% and PC2 10% respectively). Judging from the confusion matrix of the LDA, the classification accuracy reach 92%. It may conclude that infrared spectroscopy approach can be used to rapidly classify and sort coffee beans based on their geographical and environmental origins.

Comparing the effects of green tea/ green coffee bean extracts and chlorhexidine gluconate on salivary Streptococcus mutants count in children with early childhood caries

Dental caries is known as a major oral health problem induced by Streptococcus . and Lactobacillus as primary contributing microorganisms responsible for this condition. The aim of this study was to compare the effect of Green tea/ Green coffee Bean Extracts and Chlorhexidine Gluconate on Streptococcus mutans count. The study was conducted among 90 preschool children aged from 4 to 6 years. Statistical analysis was done using the Shapiro-Wilk test, Friedman test, Chi-square test, paired sample t-test, repeated measures analysis of variance (ANOVA) and Mann-Whitney U test at a signi icance level of 0.05. The results demonstrated a signi icant difference in the mean of salivary S. mutans count after administration of CHG (p-value=0.001) and GT (p-value=0.02) between three different times. The study results indicate the bene icial effects of Green Tea/ Green Coffee Bean extracts and Chlorhexidine Gluconate on salivary Strepto- coccus mutans count.