Industry Overview
Native potato starch is a carbohydrate composed primarily of amylose and amylopectin and is obtained from potato varieties selected for high starch, low protein, and low fibre content. Potatoes are widely consumed as food, while surplus and cull potatoes unsuitable for table use can serve as raw material for starch and other industrial products, including dextrose and liquid glucose.
Potatoes contain approximately 18-21% carbohydrates, with starch representing the major carbohydrate and approximately 65-80% of the tuber's dry weight. Potato starch occurs as microscopic granules within the parenchyma tissue. Its amylose-to-amylopectin ratio is approximately 24:76, and its gelatinization temperature ranges from 56oC to 69oC. When mixed with water, it forms a translucent, high-viscosity paste.
Commercial production involves washing and milling potatoes to liberate starch, followed by separation of protein water and fibre, starch settling or extraction, refining, dewatering, and drying. Sulphur dioxide may be used to inhibit oxidizing enzymes during processing. The resulting product is a purified starch suitable for applications across food and several industrial sectors. Raw material selection and effective washing, rasping, extraction, refining, and drying are fundamental to achieving consistent starch quality.
Cost Estimation
| Cost Parameter | Value |
|---|---|
| Plant Capacity | 3 MT/Day |
| Land & Building (3000 sq.mt.) | Rs. 1.17 Cr |
| Plant & Machinery | Rs. 7.72 Cr |
| Working Capital for 1 Month | Rs. 40 Lac |
| Total Capital Investment | Rs. 9.62 Cr |
| Rate of Return | 12% |
| Break Even Point | 76% |
Content Index
Appendix
Frequently Asked Questions
Native potato starch is a carbohydrate extracted from potatoes without chemical modification. It consists mainly of amylose and amylopectin and is obtained from potato varieties selected for high starch and comparatively low protein and fibre content. The report identifies an amylose-to-amylopectin ratio of 24:76 and a gelatinization temperature ranging from 56oC to 69oC. When mixed with water, potato starch produces a translucent paste with high viscosity, making it useful in food and industrial applications.
Potato starch is manufactured by washing and rasping potatoes, separating starch from potato juice and fibre, refining the starch milk, and then dewatering and drying the refined starch. The report describes a process involving raw-material receiving, water transport, de-stoning and washing, rasping, de-sanding, centrifugal extraction, residue dewatering, concentration and refining, vacuum dewatering, air drying, and sieving and storage. Sulphur dioxide may be used during processing to inhibit oxidizing enzymes.
Potatoes selected for starch production should have high starch content and low protein and fibre contents. The report specifically identifies selected potato varieties as the preferred raw material and notes that surplus potatoes and tubers unsuitable for table use can also be used for starch manufacture. Proper raw-material selection supports efficient extraction and helps establish the quality of the finished starch.
Potato starch is used in food and several industrial sectors, including textile, paper, and pharmaceutical applications. Its functional properties, particularly its ability to form a high-viscosity paste after gelatinization, make it useful as an ingredient or processing aid. The report also covers applications in food products, pet foods, animal nutrition, and starch-based products, while identifying multiple end-use sectors and market opportunities for potato starch.
A potato starch plant requires equipment for potato receiving, transport, de-stoning, washing, rasping, starch extraction, de-sanding, residue dewatering, refining, concentration, drying, sieving, and storage. The report also identifies equipment and plant sections associated with steeping, sulphur dioxide, fibre milling and washing, juice concentration, and handling and storage. The exact equipment configuration depends on the selected process design, product requirements, raw-material characteristics, and plant capacity.
Potato starch quality is maintained through appropriate raw-material selection, efficient washing, controlled rasping, effective extraction, refining, dewatering, drying, and hygienic handling. The report emphasizes that refining begins during raw-material intake and that efficient washing facilitates subsequent refining. It also includes GMP/GHP requirements covering premises, equipment, water, sanitation, personnel hygiene, contamination control, storage, documentation, traceability, quality control, transportation, and training.
The reported project capacity is 3 MT/Day. This capacity is stated in the project's cost-estimation section and should be treated as the project-specific capacity presented in the supplied report. The report also provides associated financial figures, including land and building, plant and machinery, working capital, total capital investment, rate of return, and break even point. These values are reproduced in the cost-estimation section without recalculation or modification.
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