Q. Explain by giving two examples, how biotechnology has helped the Indian farmers in processing their perishable crops.

Model Answer: 

Biotechnology mitigates India’s ~15–20% post-harvest perishable losses by utilizing biocatalysts, microbial fermentation, and bio-preservatives to enhance shelf-life, recovery yields, and value addition.

1. Enzymatic Processing: Fruit Juice Extraction and Clarification

• Mechanism: Application of recombinant pectinases, cellulases, and tannases to degrade fruit cell walls, reduce viscosity, and eliminate colloidal haze.
• Farmer Impact: Developed by CSIR-CFTRI/CSIR-IHBT, this allows apple and citrus farmers to increase juice extraction yields by 20–30% and process low-grade/blemished harvests into commercial concentrates, avoiding distress sales during gluts.

2. Microbial Bio-Preservation: Edible Bio-Coatings for Tropical Fruits

• Mechanism: Formulations utilizing chitosan, bacteriocins, and Trichoderma-derived biocontrol agents that act as semi-permeable atmospheric barriers and suppress fungal pathogens.
• Farmer Impact: ICAR-CISH bio-coatings delay ripening and control anthracnose in mangoes and bananas, extending ambient shelf-life by 10–14 days and enabling long-distance domestic transit without cold-chain degradation.

Integrating indigenous biotechnological processing into FPOs under the PM-FME Scheme minimizes post-harvest loss, turning agricultural surplus into stable farmer profits.