5. Which among the following is correct ?

[A] Caffeine which is a diuretic is a constituent of coffee but not found in tea
[B] Vitamin C which is also called ascorbic acid can be replaced with citric acid in our food
[C] Citric acid is used in Cola drinks
[D] All are wrong statements

) Identify the intrinsic factors that affect microbial growth in the following two products:

a) Tomatoes

b) Sun-dried tomatoes

Cut tomatoes in halves and dip in a solution containing citric acid, ascorbic acid and salt. Then the tomatoes are dried (aw<0.9 and pH <4.4).

2) What intrinsic factors are affected by the: a) citric acid, b) ascorbic acid, c) salt and d) drying treatments?

3) What are the microbial concerns for the two products and why?

which statement about the citric acid cycle is correct?

OR

Briefly describe the citric acid cycle.

4. Which of the following statements is (are) true concerning the citric acid cycle? a. The citric acid cycle is a strictly aerobic pathway b. In the Citric acid cycle, acetyl Co A is oxidized to CO2 c. The electron carriers NAD+ and FAD are used in the citric acid cycle d. all of the above e. none of the above