Descriptor
| Food | 2 |
| Science Education | 2 |
| Stoichiometry | 2 |
| Biochemistry | 1 |
| Color | 1 |
| Laboratory Experiments | 1 |
| Organic Chemistry | 1 |
| Science Activities | 1 |
| Science Experiments | 1 |
| Spectroscopy | 1 |
Author
| Angnes, Lucio | 1 |
| Masini, Jorge C. | 1 |
| Oliveira, Paulo C. C. | 1 |
| Patterson, James | 1 |
| Penteado, Jose C. | 1 |
| Sigurdsson, Snorri Th. | 1 |
Publication Type
| Journal Articles | 2 |
| Reports - Descriptive | 1 |
| Reports - Evaluative | 1 |
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Peer reviewedPatterson, James; Sigurdsson, Snorri Th. – Journal of Chemical Education, 2005
The reduction of ethyl acetoacetate using common baker's yeast is a traditional experiment that shows the stereoselective power of a biochemical system. Addition of organic solvents to aqueous reaction system increased the yields and reproducibility of the experiment thus overcoming the two problems associated with the experiment, low yield, and…
Descriptors: Food, Biochemistry, Organic Chemistry, Science Education
Peer reviewedPenteado, Jose C.; Angnes, Lucio; Masini, Jorge C.; Oliveira, Paulo C. C. – Journal of Chemical Education, 2005
This article describes the reaction between nitrite and safranine O. This sensitive reaction is based on the disappearance of color of the reddish-orange azo dye, allowing the determination of nitrite at the mg mL-1 level. A factorial optimization of parameters was carried out and the method was applied for the quantification of nitrite in…
Descriptors: Science Activities, Science Education, Laboratory Experiments, Spectroscopy
