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

Introduction

India is the world's second-largest producer of fruits and vegetables and loses a large share of that output between the field and the plate. Perishability is the reason: a tomato harvested ripe has days of usable life, so the grower sells into whatever price the local market offers on the day. Biotechnology helps by changing either the crop or the process, and the two examples below are the clearest instances of each.

Example one: delayed ripening and controlled softening

• Ripening in climacteric fruits — tomato, banana, mango, papaya — is driven by ethylene, and softening by cell-wall enzymes such as polygalacturonase.
• Biotechnological approaches suppress the ethylene biosynthesis pathway (ACC synthase and ACC oxidase) or the softening enzymes, so the fruit ripens slowly and stays firm in transit.
• India's own line of work here includes ICAR and DBT-supported research on delayed-ripening tomato and banana, and the transgenic delayed-ripening papaya developed in Indian institutions.
• What it does for the farmer: it converts a three-day selling window into a two-week one. That single change removes the distress-sale compulsion, allows transport to a distant and better-paying market, and cuts post-harvest loss at the grower's end rather than the retailer's.

Example two: enzyme technology in fruit and vegetable processing

• Microbial enzymes produced by fermentation — pectinase, cellulase and amylase — are used to clarify juice, raise extraction yield and reduce viscosity.
• Pectinase breaks down pectin in the fruit pulp, which raises juice recovery from a given quantity of mango or apple substantially and removes the haze that would otherwise make the product unsaleable.
• Fermentation-based preservation and starter cultures similarly convert surplus perishables into stable products — pickles, fermented vegetables and probiotic dairy.
• What it does for the farmer: it makes nearby processing commercially viable. Higher extraction yield means a processor can pay more per tonne of fruit, and a processor located near the orchard converts a glut into product instead of waste. This is the mechanism behind mango pulp and tomato paste clusters.

Supporting applications

• Tissue culture for disease-free planting material in banana and potato, raising uniformity and therefore processability.
• Biopreservation using bacteriocins such as nisin, extending shelf life without chemical preservatives.
• Biosensors for rapid detection of spoilage and adulteration in the cold chain.

The limits

• Regulatory caution: India's only approved transgenic food crop history is limited, and GEAC clearance for food crops has been contested, so several delayed-ripening lines have not reached farmers.
• Benefits accrue only where a cold chain and a processor exist; a longer-lasting tomato in a district with no transport link is still sold at the same price.
• Seed cost and dependence on proprietary technology remain live concerns for smallholders.

Conclusion

Biotechnology helps the Indian farmer with perishables by lengthening the selling window and by making local processing pay. Both effects are real and both are conditional on infrastructure and regulatory clearance existing alongside. The wider picture is in our notes on biotechnology in agriculture and the food processing industry.