Guwahati: Nagaland University researchers have unlocked a powerful new way to turn pineapple waste into valuable, market-ready products — a breakthrough that could boost rural incomes, cut environmental pollution, and open up new opportunities in India’s fast-growing fruit-processing sector.
Pineapple is one of the world’s most important tropical fruits, and Nagaland has quietly emerged as a major producer, earning recognition for its exceptionally sweet, low-fibre ‘KEW’ pineapple. Government-led horticulture and organic farming missions have further expanded cultivation across districts such as Chumoukedima, Niuland, Dimapur, Kiphire, and Mokokchung, generating thousands of tonnes of fruit each season.
But pineapple processing comes with a hidden problem: mountains of peels, pomace, cores, and crowns often end up in dumpsites or farmland, creating both environmental and economic burdens. This so-called “waste,” however, is rich in fibre, pectin, vitamins, and minerals — and packed with untapped potential.
The research team from Nagaland University has shown exactly how these discarded materials can be transformed into high-value products, with vinegar emerging as one of the most promising avenues.
Because pineapple residues contain natural sugars, they provide an excellent substrate for fermentation. The study demonstrates that pineapple peel, in particular, produces vinegar with superior acidity, flavour, aroma, and sensory appeal — strong enough to rival expensive apple-based vinegars currently dominating the market.
The findings, published in the European Journal of Nutrition and Food Safety, reveal a low-cost, eco-friendly, and commercially viable method that could help fruit-processing enterprises, farmer groups, and rural entrepreneurs turn waste into revenue.
Nagaland University Vice-Chancellor Prof. Jagadish K. Patnaik hailed the achievement as a “significant scientific breakthrough,” noting that the innovation aligns with the University’s commitment to sustainability and community-driven development. “Transforming discarded peels into a valuable, nutritious, and eco-friendly product not only reduces waste but also opens new opportunities for entrepreneurship and food-processing industries,” he said.
Lead researcher Prof. Akali Sema explained that the team tested different pineapple waste components using standard fermentation techniques. Peel-based vinegar stood out for quality, colour, and taste — and was the clear favourite in sensory tests. “This shows immense potential for turning what is usually thrown away into something of real commercial value,” she said.
Prof. C.S. Maiti added that complementary research is underway to improve fruit quality, packaging, and export readiness, while Dr. Animesh Sarkar highlighted training provided to farmers on staggered planting to avoid market gluts and ensure steady income throughout the year.
The innovation pipeline doesn’t end there. Research scholar Ms. Sentinaro Walling is preparing to file a patent for a pineapple-core candy — yet another product that turns agricultural by-products into profitable ventures.
As Nagaland continues to strengthen its position as a premium pineapple hub, this research adds momentum to the region’s shift toward sustainable production, value addition, and rural entrepreneurship.
With its unique sweetness and biochemical attributes, Nagaland’s pineapple may once again prove why it stands out — not just on the farm, but in laboratories, kitchens, and markets across India.
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