Food Microbiology Latest Research Quiz: January 2013
Test your knowledge of recent food microbiology published research! All questions relate to food microbiology researched published in the January 2013 Journal of Food Science.
- 1.What environmental conditions resulted in the highest amount of toxin production by the fungi Aspergillus flavus in rice?
- A.
0.90 to 0.92 aw with a temperature of 20° C.
- B.
0.70 to 0.72 aw with a temperature of 40° C.
- C.
0.37 to 0.40 aw with a temperature of 40° C.
- D.
27 to 0.30 aw with a temperature of 20° C.
- 2.Which other drug was 200 µg Dehydrozingerone comparable to in regards to the antibiotic susceptibility of A. Ochraceus?
- A.
25 µg Fluconazole
- B.
100 units Amphotericin
- C.
10 µg Ketoconazole
- D.
100 units Nystatin
- 3.A new method of multiplex real-time PCR was developed to detect and quantify what?
- A.
Pathogenic bacteria
- B.
Protozoan parasites
- C.
Mycotoxigenic fungi
- D.
Enteric viruses
- 4.The influence of Galactooligosaccharides and modified waxy maize starch in yogurt was:
- A.
Galactooligosaccharides and modified waxy maize starch produced increased firmness in the yogurt
- B.
Galactooligosaccharides and modified waxy maize starch produced lower levels of synersesis.
- C.
Galactooligosaccharides produced a sour flavor, while modified waxy maize starch produced a sweet flavor
- D.
Galactooligosaccharides produced increased firmness; however, modified waxy maize starch produced a less firm yogurt.
- 5.After the study published this month, what are potential practical applications of Quaternary-Based Chitin/Chitosan Derivatives?
- A.
They could help certain prebiotic bacteria survive heating from cooking.
- B.
They could raise temperatures bacteria require for growth, allowing for prolonged room temperature storage.
- C.
They could be used as antimicrobials.
- D.
They could be used as nanoemulsifiers.
- 6.What was added to banana puree films to reduce water vapor permeation rate, increase film handability, and promote elongation?
- A.
Pectin, glycerol, and chitosan nanoparticles
- B.
Glycerol and algenic acid
- C.
Carrageenan and micelle nanoparticles
- D.
Calcium alginate and silica nanoparticles
- 7.What was the effect of Proanhocyanidin oligomers isolated from Salacia retculata extract?
- A.
They proved to have antifungal properties
- B.
They proved to have pancreatic lipase inhibitory activity
- C.
They proved to have proteasome inhibitor activity
- D.
They proved to contain antioxidant qualities
- 8.Red wine extracts may be beneficial for people undergoing...
- A.
Dehydration
- B.
Radiation therapy
- C.
Pregnancy
- D.
Oxidative stress
- 9.What is a potential application of Tannin additives in wine?
- A.
Changing the color of the wine during fermentation
- B.
Eliminating hangovers when consumed
- C.
Food for yeast cells during fermentation
- D.
Increasing alcohol yield during fermentation
- 10.Which is NOT a nutritional benefit to the Rice Bean?
- A.
Unsaturated fatty linoleic, and linolenic acids
- B.
Albumin and globulin proteins
- C.
Anthocyanins
- D.
Protein in vitro digestibility of 54.23%
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