Biotechnology Lecture Notes

Batch Fermentation vs Continuous Fermentation Process: Similarities and Differences – A Comparison Table


Difference continuous and batch fermentation

Batch Fermentation vs Continuous Fermentation Process
(Similarities and difference between Batch Fermentation and Continuous Fermentation Process)

Batch Fermentation and Continuous Fermentation are the two commonly adopted Industrial Fermentation methods for the scale production of microbial biomass or metabolites.

Batch Fermentation: Here the fermenter is first filled with the raw material (carbon source). Then the microbes are added and allowed to ferment the raw material under optimum pH and aeration. The products remain in the fermenter until the completion of fermentation. After fermentation, the products are extracted and the fermenter is cleaned and sterilized before next round. Thus here the fermentation is done as separate batches.

Continuous Fermentation: Here the exponential growth rate of the microbes is maintained in the fermenter for prolonged periods of time in by the addition of fresh media are regular intervals. The metabolite or the product of fermentation is extracted for the overflow from the fermenter. Thus unlike batch fermentation, in continuous fermentation, the fermentation process never stops in between and it continues to run for a long period of time with the addition of nutrients and harvesting the metabolites at regular intervals.

The present post describes the Similarities and Differences between Batch Fermentation and Continuous Fermentation Process as a Comparison Table.

Similarities between Batch Culture and Continuous Culture Fermentation Methods

Ø  Both are industrial fermentation methods for the large scale production.

Ø  Both methods can be used for the production of microbial biomass or products.

Ø  Both run under controlled environmental conditions

Ø  The mechanical components of fermenter is almost similar in both types




Difference between Batch Fermentation and Continuous Fermentation Process

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Lecture notes in Microbiology

MCQ on History of Microbiology (MCQ 05) with Answer Key


mcq on history of microbiology

MICROBIOLOGY MCQ-05
(Biology / Life Sciences MCQ: Multiple Choice Questions in Microbiology)

MCQ on Scientists & Discoveries in Microbiology Part 2
(Sample/Model/Practice Questions for NEET, AIPMT, M.Sc. and Medical Entrance Examination)


1. Who discovered Mycobacterium tuberculosis?

a.       Koch
b.      Jenner
c.       Pasteur
d.      Virchow

2. Mycobacterium lepree was discovered by:

a.       Pasteur
b.      Jenner
c.       Koch
d.      Hansen

3. Antibodies were discovered by:

a.       Edelman
b.      Porter
c.       Edelman and Porter
d.      Edelman and Hess

4. Streptococcus pneumonia was discovered by:

a.       Pasteur
b.      Jenner
c.       Koch
d.      Hansen

5. Who discovered Bacillus anthacis?

a.       Koch
b.      Pasteur
c.       Jenner
d.      Hansen

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Lecture notes in Microbiology

MCQ on Scientists and Discoveries in Microbiology with Answer Key (MCQ 04)


Scientists in Microbiology MCQ

MICROBIOLOGY MCQ-04
(Biology / Life Sciences MCQ: Multiple Choice Questions in Microbiology)

MCQ on Scientists & Discoveries in Microbiology Part 1
(Sample/Model/Practice Questions for NEET, AIPMT, M.Sc. and Medical Entrance Examination)


1. Scientist who demonstrated that open tubes of broth remained free of microbes when air was free of dust:

a.       Tyndal
b.      Pasteur
c.       Petri
d.      Francesco Redi

2. Who discovered bacterial transformation?

a.       Jenner
b.      Griffith
c.       Messelson
d.      Tautum

3. Who is known as the father of microbiology?

a.       Rasteur
b.      Koch
c.       Leewenhoek
d.      Robert Hook

4. Who is known as the father of medical microbiology?

a.       Koch
b.      Pasteur
c.       Jenner
d.      Tautum

5. Antiseptic properties were first described by:

a.       Jenner
b.      Pasteur
c.       Lister
d.      Beijernic

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Lecture notes in Microbiology

Microbiology MCQ 02 Practice Questions Part 2 with Answer Key and Explanations


microbiology quizzes with answer key

MICROBIOLOGY MCQ-02
(Biology / Life Sciences MCQ: Multiple Choice Questions in Microbiology)

Quizzes on Microbiology: Practice Test Part 2
(Sample/Model/Practice Questions for CSIR JRF/NET Life Science Examination, ICMR JRF Exam, DBT BET JRF Exam, GATE BT and XL Exam, ICAR JRF NE Exam, PG Entrance Exam, JAM Exam, GS Biology Exam and Medical Entrance Exam)

1. Glucans, Mannans and Chitin are found to be present in the cell wall of ______

a.       Plants
b.      Eubacteria
c.       Fungi
d.      Actinomycetes

2.  _____ is a synthetic Antimicrobial drug against Mycobacterium tuberculosis.

a.       Penicillin
b.      Tetracycline
c.       Erythromycin
d.      Isoniazid

3. Who isolated Streptococcus pneumonia for the first time?

a.       Robert Koch
b.      Edward Jenner
c.       Antony von Leewenhock
d.      Louis Pasteur

4. Botulinum toxin is a ________.

a.       Protein
b.      Lipid
c.       Sugar
d.      Nucleic acid

5. Tear drops are rich in ___________.

a.       Amylase
b.      Phosphatase
c.       Lysozyme
d.      Protease

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Lecture notes in Microbiology

Microbiology MCQ 01 Practice Questions Part 1 with Answer Key and Explanations


microbiology quizzes

MICROBIOLOGY MCQ-01
(Biology / Life Sciences MCQ: Multiple Choice Questions in Microbiology)

Quizzes on Microbiology: Practice Test Part 1
(Sample/Model/Practice Questions for CSIR JRF/NET Life Science Examination, ICMR JRF Exam, DBT BET JRF Exam, GATE BT and XL Exam, ICAR JRF NE Exam, PG Entrance Exam, JAM Exam, GS Biology Exam and Medical Entrance Exam)

1. The process in which all living cells, spores and viruses are completely destroyed from an object is called _____.

a.       Disinfection
b.      Pasteurization
c.       Sterilization
d.      Antisepsis

2. UHT sterilization involves high temperature exposure of objects for _____.

a.       1 – 3 seconds
b.      1 – 3 minutes
c.       1 – 3 hours
d.      10 – 30 hours

3.  _______ is an antiseptic.

a.       Chlorine
b.      Copper Sulphate
c.       Ozone
d.      70% ethanol

4. Error rate of Taq DNA polymerase is _____

a.       10-4
b.      10-14
c.       10-24
d.      10-40

5. The best form of DNA to transform E. coli is ______.

a.       Linear
b.      Covalently closed
c.       Nicked circles
d.      Nicked linear

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