Test Yourself!

1)     Who was the first to commercialise the lactic acid?
(a) Robergs et al.
(b) Carl Wilhelm Scheele
(c) James Watson
(d) Charles E. Avery

2)     Which year was it?
(a) 1780
(b) 1882
(c)  1881
(d) 1782

 

3)     Which of the following is NOT the characteristics of the raw materials for lactic acid production?
(a) cheap
(b) by-product formation
(c) high yield
(d) low levels of contaminants

 

4)     All of these raw materials have been commercially used except
(a) Lactose
(b) Maltose
(c) Ethanol
(d) Mannitol

 

5)     Why is it necessary for raw materials to be cheap?

Ans: ____________________________________________________

 

6)     Which of these is NOT the application of lactic acid?
(a) green solvent – ethyl lactate
(b) cereal
(c) pH regulators
(d) PLA polymers

 

7)     How much lactic acid does NatureWorks LCC produce per year?
(a) 180 000 (metric) tonnes
(b) 1 000 000 (metric) tonnes
(c) 500 000 (metric) tonnes
(d) 999 999 (metric) tonnes

 

8)     What is the common bioreactor that is used in the production of lactic acid?
(a) Continuous Stirred Tank Reactor
(b) Air Lift Bioreactor
(c) Bubbles Column
(d) Fluidized Bed Reactor

 

9)     Name the process that is used in product recovery of lactic acid?


Ans: ______________________

 

10) Which of the bacteria strains do NOT use continuous fermentation mode for lactic acid production?
(a) Lactobacillus casei SU No 22+
(b) Lactobacillus lactis WS 1042
(c) Lactococcus lactis IO-1 JCM 7638
(d) All of the above