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Questions and Answers
What is the primary function of the bio-emulsifier named 'Yansan'?
What is the primary function of the bio-emulsifier named 'Yansan'?
- To provide anti-mutagenic properties
- To form a stable water-in-oil emulsion (correct)
- To prevent lipid oxidation
- To enhance the porosity of yeast cells
How might β-D-glucan contribute to cellular protection?
How might β-D-glucan contribute to cellular protection?
- By degrading proteins in yeast cells
- By enhancing yeast cell porosity
- By increasing emulsion stability in acidic conditions
- By preventing lipid peroxidation (correct)
What role does the yeast cell wall play in the microencapsulation process?
What role does the yeast cell wall play in the microencapsulation process?
- It initiates the hydrolysis of encapsulated substances
- It can be used as a carrier on its own (correct)
- It acts solely as a barrier without any functional properties
- It degrades and enhances the release of encapsulated materials
What was confirmed about the yeast cell wall's effect on cancer cells in mice?
What was confirmed about the yeast cell wall's effect on cancer cells in mice?
What was the primary methodology utilized for encapsulation in the study by Mokhtari et al.?
What was the primary methodology utilized for encapsulation in the study by Mokhtari et al.?
Which of the following statements about glucan mannan lipid particles is accurate?
Which of the following statements about glucan mannan lipid particles is accurate?
What was a noted benefit of coating probiotic bacteria with yeast cell components in the study?
What was a noted benefit of coating probiotic bacteria with yeast cell components in the study?
What is one application of yeast microcapsules in the food industry?
What is one application of yeast microcapsules in the food industry?
Which of the following is a drawback of using yeast in processing temperature-sensitive molecules?
Which of the following is a drawback of using yeast in processing temperature-sensitive molecules?
What feature of the yeast cell wall is associated with the free radical scavenging properties?
What feature of the yeast cell wall is associated with the free radical scavenging properties?
How do yeast cells contribute to the encapsulation of bioactive compounds?
How do yeast cells contribute to the encapsulation of bioactive compounds?
What is one effect of high inlet temperatures on yeast microcapsules?
What is one effect of high inlet temperatures on yeast microcapsules?
In which forms can microcapsules made from yeast cells be produced?
In which forms can microcapsules made from yeast cells be produced?
What process was used by Ruphuy et al. to encapsulate drugs in yeast glucan particles?
What process was used by Ruphuy et al. to encapsulate drugs in yeast glucan particles?
Which statement correctly describes the role of yeast cells in wastewater recycling?
Which statement correctly describes the role of yeast cells in wastewater recycling?
What factor can negatively influence the activity of chemical bioactive compounds during encapsulation?
What factor can negatively influence the activity of chemical bioactive compounds during encapsulation?
What is one benefit of using yeast cells as a carrier for microencapsulation?
What is one benefit of using yeast cells as a carrier for microencapsulation?
Which yeast species is mentioned as a suitable carrier for food ingredients?
Which yeast species is mentioned as a suitable carrier for food ingredients?
What characteristic makes yeast cells preferable to other wall materials for encapsulation?
What characteristic makes yeast cells preferable to other wall materials for encapsulation?
How can the encapsulation efficiency of yeast cells be improved?
How can the encapsulation efficiency of yeast cells be improved?
Which material is NOT mentioned as a form of yeast used in encapsulation?
Which material is NOT mentioned as a form of yeast used in encapsulation?
What role do bioactive compounds play in food products?
What role do bioactive compounds play in food products?
Why is the process of microencapsulation using yeast cells considered simple?
Why is the process of microencapsulation using yeast cells considered simple?
Which of the following is a potential disadvantage of using yeast cells for encapsulation?
Which of the following is a potential disadvantage of using yeast cells for encapsulation?
Study Notes
Yeast Cells in Food and Pharmaceutical Applications
- Yeast cells are crucial in the production of alcohol, single-cell proteins (SCPs), enzymes, and wastewater recycling.
- They provide a bland taste and low cost, making them appealing in the food industry.
- Yeast microcapsules can be utilized in various products like baked goods, sauces, and cereals, enhancing their safety and stability.
Microencapsulation Techniques
- Spray drying is an effective method for creating microcapsules with yeast cells, preserving core materials and enabling controlled release.
- Studies show that high inlet temperatures (200°C) do not significantly impact the encapsulation of compounds like ethyl hexanoate in dried S. cerevisiae cells.
- Yeast cells are used to microencapsulate pharmaceuticals such as acyclovir and berberine, with improvements in drug dissolution rates compared to their raw counterparts.
Innovative Carrier Materials
- Yeast cells are biodegradable, making them superior to other wall materials for bioactive compound encapsulation.
- Whole yeast cells and their components (cell wall and plasma membrane) serve as effective wall materials in microencapsulation.
- Pretreatment of yeast cells can enhance the encapsulation efficiency of bioactive compounds.
Functional Benefits and Health Effects
- Yeast cell walls possess anti-mutagenic and antigenotoxic properties and can help with free radical scavenging.
- Compounds like β-D-glucan found in yeast cell walls may prevent lipid peroxidation and protect DNA from oxidative damage.
- Research supports the potential of yeast cell walls in reducing cancer cell proliferation in mice studies.
Applications in Probiotic Encapsulation
- Yeast cell walls can also encapsulate probiotic bacteria, improving their stability during storage.
- They can detoxify mycotoxins, such as aflatoxin B1, suggesting functionality beyond typical encapsulation roles.
- Techniques involve using glucan mannan lipid particles from S. cerevisiae cell walls for the efficient encapsulation of probiotics.
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Description
This quiz explores the significant role yeast cells play in various processes, including alcohol production, the manufacture of single cell proteins, and enzyme production. It also discusses the drawbacks related to temperature-sensitive molecules and the impact of high drying temperatures on these processes.
