scholarly journals A Single Platinum Microelectrode for Identifying Soft Drink Samples

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Lígia Bueno ◽  
Thiago R. L. C. Paixão

Cyclic voltammograms recorded with a single platinum microelectrode were used along with a non-supervised pattern recognition, namely, Principal Component Analysis, to conduct a qualitative analysis of sixteen different brands of carbonated soft drinks (Kuat, Soda Antarctica, H2OH!, Sprite 2.0, Guarana Antarctica, Guarana Antarctica Zero, Coca-Cola, Coca-Cola Zero, Coca-Cola Plus, Pepsi, Pepsi Light, Pepsi Twist, Pepsi Twist Light, Pepsi Twist 3, Schin Cola, and Classic Dillar’s). In this analysis, soft drink samples were not subjected to pre-treatment. Good differentiation among all the analysed soft drinks was achieved using the voltammetric data. An analysis of the loading plots shows that the potentials of −0.65 V, −0.4 V, 0.4 V, and 0.750 V facilitated the discrimination process. The electrochemical processes related to this potential are the reduction of hydrogen ions and inhibition of the platinum oxidation by the caffeine adsorption on the electrode surface. Additionally, the single platinum microelectrode was useful for the quality control of the soft drink samples, as it helped to identify the time at which the beverage was opened.

2021 ◽  
pp. 026010602199693
Author(s):  
Prince Atorkey ◽  
Mariam Akwei ◽  
Winifred Asare-Doku

Background: Carbonated soft drinks consumption is associated with weight gain and other chronic diseases. Aim: To examine whether socio-demographic factors, health risk factors and psychological distress are associated with carbonated soft drink consumption among adolescents in selected senior high schools in Ghana. Methods: Data were obtained from the 2012 Ghana Global School-based Student Health Survey (GSHS). Participants consisted of 1756 school-going adolescents sampled using a two-stage cluster sampling method. Binomial logistic regression was used to determine whether socio-demographic factors, health risk factors and psychological distress were associated with consumption of soft drinks. Results: The prevalence of carbonated soft drinks consumption was 34.9%. Males (odds ratio (OR) = 0.73 (95% confidence intervals (CI) 0.59–0.92); p = 0.007), and participants with high socio-economic status (OR = 0.76 (95% CI 0.48–0.97); p = 0.033) had smaller odds for consumption of soft drinks. Also, adolescents in Senior High School (SHS) 3 (OR = 0.72 (95% CI 0.53–0.97); p = 0.034) and SHS 4 (OR = 0.63 (95% CI 0.43–0.91); p = 0.014) had smaller odds for soft drinks intake compared to those in SHS 1. Health risk factors associated with greater odds of high soft drink consumption were tobacco use (OR = 1.68, (95% CI 1.07–2.65); p = 0.025), fast food consumption (OR = 1.88, (95% CI 1.47–2.41); p = 0.011) and alcohol consumption (OR = 1.43, (95% CI 1.02–1.99); p = 0.039). Consuming adequate fruit (OR = 0.19 (95% CI 0.15–0.24); p = 0.000) and adequate vegetable (OR = 0.55 (95% CI 0.34–0.87); p = 0.011) were associated with lower odds for soft drink consumption. Adolescents who reported feeling anxious had smaller odds for soft drink intake (OR = 0.65, (95% CI 0.47–0.91); p = 0.011). Conclusions: The findings from this study show that socio-demographic characteristics, health risk factors and psychological distress are associated with the soft drink consumption among adolescents in Ghana. Interventions aimed at reducing soft drink consumption and other health risk factors are needed.


2009 ◽  
pp. 125-132
Author(s):  
Krisztián Lőrinczi

Consumer lifestyle and health are relevant factors to understanding consumption preferences. In the last few decades the number of lifestyle diseases has dramatically increased. The main cause for these diseases is the change in lifestyle; including a lack of attention to physical activity and good nutrition. Health and lifestyle are important factors by purchase decision process. In accordance with these, I examine the consumer behaviour toward soft drinks with special regards to healthy lifestyle and the state of health. My examinations can be considered mainly as aqualitative research, which can serve as a basis for further analyses and research, however, the conclusions and experience gained from it are worthy of consideration. I differentiated five soft drink categories: ice tea, carbonated soft drinks, fruit juices, mineral waters, sport and energy drinks and studied the consumer behaviour toward them. The study focuses on the consumption of these and the factors influencing their purchase with special regards to lifestyle.


2008 ◽  
Vol 11 (1) ◽  
pp. 49-56 ◽  
Author(s):  
Elling Bere ◽  
Elin Sørli Glomnes ◽  
Saskia J te Velde ◽  
Knut-Inge Klepp

AbstractObjectiveTo identify determinants of adolescents’ consumption of carbonated soft drinks (regular and diet), both of total consumption and of consumption at school.Design/Setting/SubjectsRegular and diet soft drink consumption was measured by food frequency questions that were dichotomised. Several potential environmental and personal determinants of consumption were measured. A total of 2870 (participation rate: 85%) 9th and 10th graders, within 33 Norwegian schools, participated in the study. Multilevel logistic regression analyses were preformed for total soft drink consumption (twice a week or more vs. less) and for consumption at school (once a week or more vs. less).ResultsA total of 63% and 27% of the participants reported to drink respectively regular and diet soft drinks twice a week or more, and 24% and 8%, respectively, reported to drink soft drinks once a week or more at school. Preferences, accessibility, modelling and attitudes were the strongest determinants of both regular and diet soft drink consumption. In addition, gender, educational plans and dieting were related to both total soft drink consumption and consumption at school. Pupils with longer distance from school to shop and those in schools with rules concerning soft drink consumption tended to have lower odds of drinking both regular and diet soft drinks at school.ConclusionThis study shows that gender, educational plans, dieting, accessibility, modelling, attitudes and preferences all seem to be strong determinants of adolescents’ soft drink consumption. Parents and the home environment appear as great potential intervention targets.


2019 ◽  
Vol 40 (4) ◽  
pp. 444-459 ◽  
Author(s):  
Ty Beal ◽  
Saul S. Morris ◽  
Alison Tumilowicz

Background: Adolescence presents an opportunity to influence diet, which impacts present and future health outcomes, yet adolescent diets globally are poorly understood. Objective: We generate evidence on adolescent diets globally and explore patterns and trends by subpopulation. Methods: We estimated mean frequency of consumption and prevalence of less-than-daily fruit and vegetable consumption, at-least-daily carbonated beverage consumption, and at-least-weekly fast-food consumption among school-going adolescents aged primarily 12 to 17 years from the Global School-based Student Health Surveys in Africa, Asia, Oceania, and Latin America between 2008 and 2015. Random-effects meta-analysis was used to pool estimates globally and by subgroup. Results: On average, adolescents consumed fruit 1.43 (95% confidence interval [CI] 1.26–1.60) times per day, vegetables 1.75 (1.58–1.92) times per day, carbonated soft drinks 0.99 (0.77–1.22) times per day, and fast food 1.05 (0.78–1.32) times per week. Overall, 34.5% (95% CI 29.4–39.7) consumed fruit less than once per day, 20.6% (15.8–25.9) consumed vegetables less than once per day, 42.8% (35.2–50.7) drank carbonated soft drinks at least once per day, and 46.1% (38.6–53.7) consumed fast food at least once per week. Mean daily frequency of fruit consumption was particularly low in South and East Asia (1.30 [1.02–1.58]); carbonated soft drink consumption high in Latin America (1.54 [1.31–1.78]), high-income countries (1.66 [1.29–2.03]), and modern food system typologies (1.44 [0.75–2.12]); and mean weekly fast food consumption high in mixed food system typologies (1.29 [0.88–1.71]). Conclusions: School-going adolescents infrequently consume fruits and vegetables and frequently consume carbonated soft drinks, but there is wide variability by subpopulation.


2000 ◽  
Vol 63 (12) ◽  
pp. 1719-1724 ◽  
Author(s):  
G. GONZÁLEZ ◽  
E. M. PEÑA MÉNDEZ ◽  
M. J. SÁNCHEZ SÁNCHEZ ◽  
J. HAVEL

This work describes an alternative for chemical data research, with the aim of evaluating finished product quality. Analytical data for additives in soft drinks are interpreted by the use of multivariate data analysis: principal component analysis (PCA), factor analysis, cluster analysis, and artificial neural networks. Taking into account various chemical components like sorbic, benzoic, and ascorbic acids; saccharose; caffeine; Na, K, Ca, Mg, Fe, Zn, Cu, P, and B, soft drinks were characterized and classified. The ratios of Na, K, Ca + Mg, P, and K/Na have been studied. The application of PCA, cluster analysis, and artificial neural networks showed that combination of these chemometric tools offers effective means for modeling and classifying soft drinks in accordance with their contents in additives and heavy metals.


2019 ◽  
Vol 273 ◽  
pp. 9-14 ◽  
Author(s):  
Emanuela dos Santos Silva ◽  
Erik Galvão Paranhos da Silva ◽  
Daniélen dos Santos Silva ◽  
Cleber Galvão Novaes ◽  
Fábio Alan Carqueija Amorim ◽  
...  

2009 ◽  
Vol 3 (3-4) ◽  
pp. 41-44
Author(s):  
Krisztián Lőrinczi

Consumer lifestyle and health are relevant factors to understanding consumption preferences.The number of lifestyle diseases has dramatically increased worldwide. The main cause for these diseases is the change in lifestyle; including a lack of attention to physical activity and good nutrition. Health and lifestyle are important factors by purchase decision process. In accordance with these, I examine the consumer behaviour toward soft drinks with special regards to healthy lifestyle and the state of health. My examinations can be considered mainly as a qualitative research among German students, which can serve as a basis for further analyses and research, however, the conclusions and experience gained from it are worthy of consideration. I differentiated five categories: ice tea, carbonated soft drinks, fruit juices, mineral waters, sport and energy drinks and studied the consumer behaviour toward them. The study focuses on the consumption of these and the factors influencing their purchase with special regards to lifestyle.


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