Abstract
To realize the characteristics and potential health effect of soft drink, the pH value, acidity, heavy metal, and turbidity containing were measured. The pH and acidity of natural juice were also determined to compared with those of mixed fruit juice drink.
Twenty-two kinds of carbonated and non- carbonated drinks were sampled in this study. Results show that the pH ranges from 2.3 to 3.4 and from 3.2 to 3.7 for carbonated and non-carbonated drinks, respectively, and some have pH value lower than that of vinegar. The turbidity of most soft drinks are below 0.5 NTU except 2 kinds of drink with turbidity between 40-50 NTU. The concentrations of calcium, magnesium, zinc, and lead in aluminum-canned drinks are 21.1±11.2 mg/l, 5.38±4.19 mg/l, 0.07±0.04 mg/l, and below 0.2 mg/l, respectively. Arsenic is not detectable in all samples. The sodium concentration ranges from 12 to 520 mg/l and the variation depends on different kinds of drink. The pH values of natural juice ranges from 2.8 to 4.3 and acidity from 950 to 9100 mg CaCO3/1. Compared with mixed fruit juice drink, although the acidity is not significant difference, the pH value of mixed fruit juice drink is lower than that of natural juice.
Adverse health effect caused by the low pH and calcium/phosphate imbalance due to the supplement of phosphate in soft drinks need to be concerned while plenty of soft drink is intake daily. Since sport drinks contain high amount of sodium ion, frequent uptake this kind of drink especially in large volume by the hypertension patients is not recommended.
Twenty-two kinds of carbonated and non- carbonated drinks were sampled in this study. Results show that the pH ranges from 2.3 to 3.4 and from 3.2 to 3.7 for carbonated and non-carbonated drinks, respectively, and some have pH value lower than that of vinegar. The turbidity of most soft drinks are below 0.5 NTU except 2 kinds of drink with turbidity between 40-50 NTU. The concentrations of calcium, magnesium, zinc, and lead in aluminum-canned drinks are 21.1±11.2 mg/l, 5.38±4.19 mg/l, 0.07±0.04 mg/l, and below 0.2 mg/l, respectively. Arsenic is not detectable in all samples. The sodium concentration ranges from 12 to 520 mg/l and the variation depends on different kinds of drink. The pH values of natural juice ranges from 2.8 to 4.3 and acidity from 950 to 9100 mg CaCO3/1. Compared with mixed fruit juice drink, although the acidity is not significant difference, the pH value of mixed fruit juice drink is lower than that of natural juice.
Adverse health effect caused by the low pH and calcium/phosphate imbalance due to the supplement of phosphate in soft drinks need to be concerned while plenty of soft drink is intake daily. Since sport drinks contain high amount of sodium ion, frequent uptake this kind of drink especially in large volume by the hypertension patients is not recommended.
| Translated title of the contribution | Study on the pH Value, Acidity, and Heavy Metal Concentration of Soft Drink |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 109-115 |
| Number of pages | 7 |
| Journal | 中華公共衛生雜誌 |
| Volume | 15 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1 Apr 1996 |
Keywords
- soft drink
- pH value
- acidity
- heavy metal