Skip to main content

Bioprocess technology for the production of cell biomass and primary/secondary metabolites.


Bioprocess Technology for the Production of Cell Biomass and Primary & Secondary Metabolites

1. Introduction to Bioprocess Technology

Bioprocess technology refers to the application of living organisms, cells, or their components to produce commercially valuable products under controlled conditions. It combines principles of microbiology, biochemistry, genetics, and chemical engineering.

Bioprocess technology is widely used for the production of:

Cell biomass
Primary metabolites
Secondary metabolites

2. Production of Cell Biomass

Definition

Cell biomass is the total mass of microbial or cultured cells produced during fermentation and harvested as the final product.

Organisms Used
Yeast
Bacteria
Fungi
Algae

Steps in Biomass Production


Selection of suitable organism

Fast growth
Non-pathogenic nature

Inoculum development
Pure culture preparation
Scale-up of culture


Culture medium preparation

Carbon source
Nitrogen source
Minerals and vitamins

Fermentation process
Batch, fed-batch or continuous culture

Harvesting of biomass
Filtration or centrifugation

Downstream processing
Washing, drying and packaging


Applications
Single Cell Protein (SCP)
Probiotics
Animal feed and food supplements


3. Primary Metabolites

Definition

Primary metabolites are growth-associated compounds produced during the logarithmic phase of microbial growth. They are essential for normal cellular metabolism.

Characteristics
Formed during active growth
High yield
Simple chemical structure


Examples
Alcohols
Organic acids
Amino acids
Vitamins


Production Process


Organisms are grown in nutrient-rich medium
Fermentation conditions such as pH, temperature, aeration, and agitation are strictly controlled
Mainly produced by batch or fed-batch fermentation
Product is recovered by filtration, distillation or crystallization


4. Secondary Metabolites

Definition
Secondary metabolites are non-growth-associated compounds produced during the stationary phase of growth. They are not essential for growth but have ecological and commercial importance

Characteristics
Produced after growth slows down
Species-specific
Complex molecular structure
Low concentration


Examples
Antibiotics
Alkaloids
Pigments
Toxins

Production Process

Usually involves two-stage fermentation
First stage supports cell growth
Second stage promotes metabolite synthesis
Nutrient limitation (nitrogen or phosphate) enhances production
Product recovery involves extraction and purification


5. Fermentation Methods Used


Batch Fermentation
Closed system
All nutrients added at the beginning
Commonly used for secondary metabolites
Fed-Batch Fermentation
Nutrients added intermittently
Prevents substrate inhibition
Used for primary metabolites
Continuous Fermentation
Constant inflow and outflow of medium
High productivity
Used for biomass production


6. Factors Affecting Biomass and Metabolite Production
Carbon source concentration
Nitrogen availability
pH of medium
Temperature
Oxygen supply
Agitation rate
Growth phase of organism

7. Downstream Processing


Downstream processing includes all steps involved in separation, purification, and formulation of the final product.


Steps
Removal of cells
Cell disruption (if product is intracellular)
Extraction of product
Purification
Drying and formulation

8. Applications of Bioprocess Technology
Pharmaceutical production
Food and beverage industry
Agriculture (biofertilizers, biopesticides)
Industrial enzymes
Environmental biotechnology

9. Advantages
Eco-friendly process
Large-scale production
High specificity
Cost-effective
10. Conclusion
Bioprocess technology is essential for the industrial production of biomass and metabolites. By optimizing fermentation conditions and microbial growth, valuable products used in medicine, food, and industry can be produced efficiently.



1. Bioprocess technology mainly deals with
A. Chemical synthesis
B. Use of living cells for product formation
C. Physical separation methods
D. Nuclear reactions
Answer: B
2. Cell biomass refers to
A. Metabolic waste
B. Total mass of cells produced
C. Culture medium
D. Enzymes only
Answer: B
3. Single Cell Protein (SCP) is obtained from
A. Plants only
B. Animals
C. Microorganisms
D. Minerals
Answer: C
4. Which organism is commonly used for biomass production?
A. Virus
B. Yeast
C. Protozoa
D. Algae
Answer: B
5. The phase of growth associated with primary metabolite production is
A. Lag phase
B. Log phase
C. Stationary phase
D. Death phase
Answer: B
6. Primary metabolites are
A. Non-essential for growth
B. Produced during stationary phase
C. Growth-associated products
D. Toxic substances
Answer: C
7. Which of the following is a primary metabolite?
A. Penicillin
B. Streptomycin
C. Ethanol
D. Toxin
Answer: C
8. Secondary metabolites are mainly produced during
A. Lag phase
B. Log phase
C. Stationary phase
D. Death phase
Answer: C
9. Secondary metabolites are
A. Essential for growth
B. Growth-associated
C. Species-specific
D. Simple in structure
Answer: C
10. Antibiotics are examples of
A. Primary metabolites
B. Secondary metabolites
C. Enzymes
D. Vitamins
Answer: B
11. Which fermentation system is a closed system?
A. Continuous
B. Batch
C. Chemostat
D. Turbidostat
Answer: B
12. Fed-batch fermentation is mainly used to
A. Stop microbial growth
B. Avoid substrate inhibition
C. Remove waste
D. Sterilize medium
Answer: B
13. Continuous fermentation is best suited for
A. Antibiotic production
B. Biomass production
C. Pigment production
D. Alkaloid production
Answer: B
14. Two-stage fermentation is mainly used for
A. Biomass
B. Primary metabolites
C. Secondary metabolites
D. Enzyme extraction
Answer: C
15. Nutrient limitation enhances the production of
A. Biomass
B. Primary metabolites
C. Secondary metabolites
D. Vitamins
Answer: C
16. Which factor does NOT affect bioprocess production?
A. pH
B. Temperature
C. Light intensity
D. Oxygen availability
Answer: C
17. Downstream processing involves
A. Cell growth
B. Inoculum preparation
C. Product recovery
D. Sterilization only
Answer: C
18. Centrifugation is used for
A. Sterilization
B. Cell separation
C. Aeration
D. Agitation
Answer: B
19. Which metabolite is growth-associated?
A. Penicillin
B. Streptomycin
C. Citric acid
D. Pigments
Answer: C
20. Which microorganism is widely used in industrial fermentation?
A. Virus
B. Yeast
C. Protozoa
D. Helminths
Answer: B
21. Aeration is important mainly for
A. Anaerobic microbes
B. Aerobic microbes
C. Viruses
D. Parasites
Answer: B
22. Agitation in a bioreactor helps in
A. Cell death
B. Uniform mixing
C. Product contamination
D. Inhibition of growth
Answer: B
23. Which is NOT a primary metabolite?
A. Amino acid
B. Vitamin
C. Antibiotic
D. Organic acid
Answer: C
24. Stationary phase occurs when
A. Nutrients are abundant
B. Cell division stops
C. Cells die rapidly
D. No metabolism occurs
Answer: B
25. Bioprocess technology is widely used in
A. Textile industry only
B. Pharmaceutical industry
C. Mining only
D. Construction industry
Answer: B
26. Single Cell Protein is mainly used as
A. Fuel
B. Fertilizer
C. Food and feed supplement
D. Pesticide
Answer: C
27. Which metabolite has complex structure?
A. Primary metabolite
B. Secondary metabolite
C. Biomass
D. Enzyme
Answer: B
28. Extraction is a step of
A. Inoculum preparation
B. Fermentation
C. Downstream processing
D. Sterilization
Answer: C
29. Which process is eco-friendly?
A. Chemical synthesis
B. Nuclear process
C. Bioprocess technology
D. Thermal cracking
Answer: C
30. Which organism produces antibiotics?
A. Yeast
B. Streptomyces
C. Virus
D. Algae
Answer: B
31. Log phase is also called
A. Decline phase
B. Exponential phase
C. Resting phase
D. Death phase
Answer: B
32. The main aim of fed-batch fermentation is
A. Increase contamination
B. Control nutrient level
C. Reduce oxygen
D. Stop growth
Answer: B
33. Which metabolite is produced in large quantity?
A. Secondary metabolite
B. Toxin
C. Primary metabolite
D. Pigment
Answer: C
34. Alkaloids belong to
A. Primary metabolites
B. Secondary metabolites
C. Biomass
D. Enzymes
Answer: B
35. Product inhibition can be reduced by
A. Batch fermentation
B. Fed-batch fermentation
C. No aeration
D. High temperature
Answer: B
36. Sterilization in bioprocess is done to
A. Increase growth
B. Prevent contamination
C. Increase oxygen
D. Reduce pH
Answer: B
37. Which is a non-growth-associated product?
A. Ethanol
B. Citric acid
C. Penicillin
D. Lactic acid
Answer: C
38. Continuous culture maintains cells in
A. Lag phase
B. Log phase
C. Stationary phase
D. Death phase
Answer: B
39. The end product of biomass production is
A. Enzyme
B. Cell mass
C. Antibiotic
D. Vitamin
Answer: B
40. Which is NOT an application of bioprocess technology?
A. Vaccine production
B. Antibiotic production
C. Biofertilizer production
D. Petroleum refining
Answer: D
41. Primary metabolites are essential for
A. Defence
B. Competition
C. Growth and metabolism
D. Pigmentation
Answer: C
42. Pigments are generally
A. Primary metabolites
B. Secondary metabolites
C. Biomass
D. Vitamins
Answer: B
43. Which nutrient limitation enhances antibiotic production?
A. Carbon
B. Nitrogen
C. Oxygen
D. Water
Answer: B
44. Bioreactors provide
A. Uncontrolled conditions
B. Controlled growth environment
C. Only heating
D. Only cooling
Answer: B
45. Which process converts raw material into useful product using microbes?
A. Chemical process
B. Physical process
C. Bioprocess
D. Mechanical process
Answer: C
46. The first step in bioprocess technology is
A. Downstream processing
B. Inoculum preparation
C. Product recovery
D. Packaging
Answer: B
47. Product recovery from broth is part of
A. Fermentation
B. Downstream processing
C. Inoculation
D. Sterilization
Answer: B
48. Which metabolite is produced during stress conditions?
A. Primary metabolite
B. Secondary metabolite
C. Biomass
D. Enzyme
Answer: B
49. Oxygen transfer rate is important in
A. Anaerobic fermentation only
B. Aerobic fermentation
C. Chemical reactions
D. Nuclear reactions
Answer: B
50. Bioprocess technology is important because it is
A. Expensive
B. Hazardous
C. Sustainable and eco-friendly
D. Unreliable
Answer: C



Comments

Post a Comment

Popular Posts

Genetically modified microbes - biodegradation, biopesticides, bioremediation, mineral leaching and biofertilizers.

 Genetically Modified Microbes (GMMs) covering biodegradation, biopesticides, bioremediation, mineral leaching and biofertilizers.  Genetically Modified Microbes (GMMs) Introduction Genetically Modified Microbes (GMMs) are microorganisms such as bacteria, fungi, yeast or algae whose genetic material has been altered using recombinant DNA technology to enhance or introduce desirable traits. These microbes are engineered to improve efficiency, specificity and speed of biological processes useful in agriculture, industry and environmental management. GMMs play a vital role in sustainable development by reducing dependence on chemical fertilizers, pesticides and polluting industrial processes. 1. Genetically Modified Microbes in Biodegradation Definition Biodegradation is the microbial breakdown of complex organic pollutants into simpler, non-toxic substances. Role of GMMs Natural microbes often degrade pollutants slowly. Genetic modification enhances: Enzyme activity Substrate sp...
Post a Comment
Read more

Biological Databases – Types of Data and DatabasesNucleotide Sequence Databases (EMBL, GenBank, DDBJ)

Biological Databases – Types of Data and Databases Nucleotide Sequence Databases (EMBL, GenBank, DDBJ) 1. Introduction Biological databases are systematic, computerized collections of biological information that allow efficient storage, retrieval, updating, and analysis of large volumes of biological data. With the advent of genome sequencing, molecular biology, and bioinformatics, biological databases have become essential tools in biological research. These databases support studies in genomics, proteomics, evolutionary biology, taxonomy, medicine, agriculture, and biotechnology. 2. Types of Data Stored in Biological Databases Biological databases store diverse types of biological information, including: 1. Sequence Data DNA sequences RNA sequences Protein sequences 2. Structural Data Three-dimensional structures of proteins Nucleic acid structures 3. Functional Data Gene functions Enzyme activity Regulatory elements 4. Genomic Annotation Data Gene location Exons, introns Promoters a...
Post a Comment
Read more

Protein Sequence DatabasesPIR, SWISS-PROT and TREMBEL

Protein Sequence Databases PIR, SWISS-PROT and TREMBEL 1. Introduction Protein sequence databases are biological databases that store information about amino acid sequences of proteins, along with their functional, structural, and biochemical characteristics. Since proteins are the functional molecules of the cell, protein databases are essential for understanding gene expression, metabolism, enzymatic activity, signaling pathways, and evolution. Protein sequence databases mainly contain data derived from translated nucleotide sequences and experimental protein studies. 2. Types of Protein Sequence Databases Protein sequence databases are broadly classified into: A. Primary Protein Databases Contain original protein sequence data Minimal or no manual annotation B. Secondary Protein Databases Derived from primary databases Provide curated functional and structural information C. Composite Protein Databases Combine protein data from multiple sources Reduce redundancy 3. Protein Informati...
Post a Comment
Read more

Secondary Databases (PROSITE, PRINTS, BLOCKS)

Secondary Databases (PROSITE, PRINTS, BLOCKS  Secondary Databases Introduction Biological databases are broadly classified into primary and secondary databases. Primary databases store raw experimental data (e.g., nucleotide or protein sequences), whereas secondary databases contain derived information obtained by analyzing primary sequence data. Secondary databases are mainly used to: Identify protein families Detect conserved motifs, patterns, and domains Predict protein function Study structure–function relationships Examples of secondary databases include PROSITE, PRINTS, BLOCKS, Pfam, etc. 1. PROSITE Database Definition PROSITE is a secondary database that documents protein domains, families, and functional sites in the form of patterns and profiles. Developed by Swiss Institute of Bioinformatics (SIB) Maintained along with UniProt Principle PROSITE is based on the idea that functionally important regions of proteins are conserved during evolution. These conserved regions can ...
Post a Comment
Read more

Micropropagation for Large-Scale Production of Medicinal Plants, Tree Species and Ornamentals –

Micropropagation for Large-Scale Production of Medicinal Plants, Tree Species and Ornamentals –  1. Introduction Micropropagation is an in-vitro clonal propagation technique used for rapid multiplication of plants under aseptic and controlled laboratory conditions. It enables the production of a large number of genetically uniform, disease-free plants from a small amount of starting material (explant). This technique is especially important for medicinal plants, forest tree species and ornamental plants, where conventional propagation is slow, seasonal or inefficient. 2. Principle of Micropropagation Micropropagation is based on totipotency, the inherent ability of a single plant cell to regenerate into a complete plant when provided with: Suitable nutrient medium Proper plant growth regulators Controlled light, temperature and humidity Sterile conditions. 3. Stages of Micropropagation Micropropagation generally involves five stages : Stage I – Selection and Sterilization of Expla...
Post a Comment
Read more

❃LC-MS (LIQUID CHROMATOGRAPHY – MASS SPECTROMETRY)

LC-MS (LIQUID CHROMATOGRAPHY – MASS SPECTROMETRY)  ┏━━━━━ •❃°•°❀°•°❃•━━━━•━━━┓ 1. INTRODUCTION LC-MS is a hyphenated analytical technique combining Liquid Chromatography (LC) and Mass Spectrometry (MS). It is used for separation, identification, and quantification of compounds in complex mixtures. LC separates analytes based on polarity, size, or charge, while MS detects molecules based on mass-to-charge ratio (m/z). Developed in the 1970s–1980s, LC-MS is now widely used in pharmaceutical, clinical, environmental, and food analysis. Importance : Detects trace levels of compounds (ng–pg range) Analyzes non-volatile, thermally labile compounds that cannot be analyzed by GC-MS Provides structural information through mass fragmentation Example: Detection of drugs in plasma, protein identification in proteomics, pesticide residue analysis in food. 2. COMPONENTS OF LC-MS The LC-MS system has three main parts: A. Liquid Chromatograph (LC) Function: Separates components of a mixture befor...
Post a Comment
Read more

✩‧₊ Plaque Blotting Technique

Plaque Blotting Technique *ੈ✩‧₊˚༺☆༻*ੈ✩‧₊˚*ੈ✩‧₊˚༺☆༻*ੈ✩‧₊˚ Introduction Plaque blotting is a molecular biology screening technique used to identify specific DNA or RNA sequences present in bacteriophage plaques formed on a bacterial lawn. It is especially useful in the screening of recombinant phage libraries such as λ (lambda) phage genomic or cDNA libraries. This technique combines: Plaque assay (to isolate individual phage clones) Blotting technique (to transfer nucleic acids onto a membrane) Hybridization (to detect specific sequences using labeled probes) Principle of Plaque Blotting The principle of plaque blotting is based on nucleic acid hybridization. Each plaque represents a clone of phage particles containing identical DNA. DNA from phage particles in plaques is: Released Denatured into single strands Transferred onto a nitrocellulose or nylon membrane The membrane is incubated with a labeled DNA/RNA probe complementary to the target sequence. Hybridization between probe and t...
Post a Comment
Read more

𓆞 Western Blotting Notes

Western Blotting (Immunoblotting) ❥ 𓆞❥ 𓆞❥ 𓆞❥ 𓆞❥ 𓆞❥ 𓆞❥ 𓆞❥ 𓆞❥ 𓆞❥  Introduction Western blotting, also known as immunoblotting, is a widely used analytical technique for the detection, identification, and quantification of specific proteins in a complex biological sample. The technique combines protein separation by gel electrophoresis with specific antigen–antibody interaction. The method was developed by Towbin et al. (1979) (Burnette 1981---its group work) and is called “Western” in analogy to Southern blotting (DNA) and Northern blotting (RNA). Principle The principle of Western blotting involves: Separation of proteins based on molecular weight using SDS-PAGE Transfer (blotting) of separated proteins onto a membrane Specific detection of the target protein using primary and secondary antibodies Visualization using enzymatic or fluorescent detection systems 👉 Antigen–antibody specificity is the core principle of Western blotting. Steps Involved in Western Blotting 1. Sa...
Post a Comment
Read more

Fourth Semester M.Sc. Degree Examination, May 2020BotanyBO 241 BIOINFORMATICS(2013 Admission Onwards)

Reg. No.:....... Name:......... J-4881 Fourth Semester M.Sc. Degree Examination, May 2020 Botany BO 241 BIOINFORMATICS (2013 Admission Onwards) Max. Marks: 75 I. Answer the following questions. 1. What are Secondary biological databases? 2. What is a Locus? 3. State the importance of E-value in sequence alignment? 4. Write the expansion of PHYLIP. 5. Distinguish proteome and proteomics. 6. Describe optimal alignment. 7. Define clade in a phylogenetic tree. 8. What is PIR? 9. List out any two tool used for molecular docking. 10. Write the name of submission tool for NCBI. (10 x 1=10 Marks) II. Answer the following questions in not more than 50 words. 11. (a) Give a short note on GenBank format. OR (b) Write the difference between scaled and unscaled phylogenetic trees. 12. (a) What are the two classes of data of UniProt? OR (b) State the difference between Orthologous and Xenologous sequences 13. (a) Write a brief note on character based phylogenetic analysis. OR (b) What is the role of...
Post a Comment
Read more

𓆉 INDEX PAGE -NOTETHEPOINT43

INDEX PAGE   MAIN    CONTENT 1.   HSST BOTANY SYLLABUS, DETAILED NOTES, MCQ 2.  SET GENERAL PAPER SYLLABUS, DETAILED NOTES, 50MCQ 3.  SET BOTANY SYLLABUS, DETAILED NOTES, MCQ 4. MSC BOTANY THIRD SEMESTER SYLLABUS, NOTES (KERALA UNIVERSITY ) 5. MSC BOTANY THIRD SEMESTER QUESTION PAPER (KERALA UNIVERSITY ) 6. MSC BOTANY FOURTH SEMESTER SYLLABUS &NOTES (KERALA UNIVERSITY ) 7. FOURTH SEMESTER MSC BOTANY PREVIOUS QUESTION PAPER  (KERALA UNIVERSITY )
Post a Comment
Read more