Podcast
Questions and Answers
What is the principal limiting step in the chemical analysis of natural products?
What is the principal limiting step in the chemical analysis of natural products?
- Analysis using gas chromatography
- Extraction of metabolites from the matrix (correct)
- Evaporation of the solvent
- Purification using nuclear magnetic resonance
Which technique intensifies solvent extraction by innovative methods like microwave or ultrasound?
Which technique intensifies solvent extraction by innovative methods like microwave or ultrasound?
- Pressure liquid solvent extraction (correct)
- Supercritical solvent extraction
- Kumagawa extraction
- Soxhlet extraction
What step in the analytical procedure is complete after only seconds or minutes?
What step in the analytical procedure is complete after only seconds or minutes?
- Analysis using gas chromatography (correct)
- Distillation for concentration
- Evaporation of the solvent
- Extraction of metabolites
Which type of extraction represents 80% of the total processing time in the analytical procedure for natural products?
Which type of extraction represents 80% of the total processing time in the analytical procedure for natural products?
What is the most commonly used method for concentration or purification after extraction in the analytical procedure for natural products?
What is the most commonly used method for concentration or purification after extraction in the analytical procedure for natural products?
Which technique is used to transfer the desired compounds by liquid-liquid extraction in the analytical procedure for natural products?
Which technique is used to transfer the desired compounds by liquid-liquid extraction in the analytical procedure for natural products?
What is the main goal of Green Analytical Chemistry?
What is the main goal of Green Analytical Chemistry?
What is a key challenge faced by researchers according to the text?
What is a key challenge faced by researchers according to the text?
Which ancient civilizations are mentioned as having used innovative extraction processes?
Which ancient civilizations are mentioned as having used innovative extraction processes?
What extraction technique is highlighted in the text as a solvent-free method for millennia?
What extraction technique is highlighted in the text as a solvent-free method for millennia?
Why does virgin olive oil not require further treatment before consumption?
Why does virgin olive oil not require further treatment before consumption?
What is the principle behind extracting essential oils using cold pressing?
What is the principle behind extracting essential oils using cold pressing?
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