Psyllium husk, known botanically as Plantago ovata and commercially as Isabgol or Sat-Isabgol, is the white membranous epidermis stripped from the seeds of the psyllium plant. Unjha is the global processing nerve center for psyllium, accounting for more than four-fifths of worldwide dietary fiber trade. Graded strictly by purity percentages (85% to 99%), swell volume, and microbiological purity, psyllium is both an essential pharmaceutical bulk laxative and a foundational hydrocolloid in gluten-free foods.
The Mechanical De-Husking Milling Process in Unjha
Raw psyllium seed consists of an inner embryo, an endosperm rich in protein and fatty oil, and the translucent outer husk layer that contains pure mucilaginous water-soluble hemicellulose. Extracting the pure husk requires sophisticated dry mechanical processing:
- Agricultural Cleaning: Raw seeds are passed through rotary sieves and magnetic separators to remove sand, field dust, and metallic contaminants.
- De-Husking Grind Mills: Specialized emery and rubber roller mills fracture the seed coat through precise shear friction without crushing the oil-bearing embryo.
- Pneumatic Aspiration: Powerful suction air currents loft the ultra-lightweight husk upwards into cyclonic collectors, while heavier seed remnants drop into secondary chutes.
- Sieving & Purity Grading: Successive sieving through calibrated silk and stainless steel wire meshes separates 85%, 95%, 98%, and 99% purity fractions based on residual seed coat content.
The difference between 95% and 99% purity psyllium is not merely visual; 99% purity husk delivers over 50 ml/g swell volume with virtually zero dark brown seed flecks, meeting strict USP, EP, and British Pharmacopoeia monographs.
Commercial Export Purity Grades Compared
| Purity Grade | Swell Volume (ml/g) | Light Extraneous Matter | Heavy Extraneous Matter | Primary Global Application |
|---|---|---|---|---|
| 85% Commercial | Min 28 – 35 ml/g | Max 15.0% | Max 1.0% | Animal feed supplements, veterinary medicine, industrial binders |
| 95% Food Grade | Min 35 – 40 ml/g | Max 5.0% | Max 0.5% | Breakfast cereals, high-fiber bakery, weight-management drinks |
| 98% Pharmaceutical | Min 40 – 45 ml/g | Max 2.0% | Max 0.2% | Over-the-counter bulk laxatives, soluble fiber sachets, dietary tablets |
| 99% Super Pure | Min 48 – 55 ml/g | Max 1.0% | Max 0.1% | Premium pharmaceutical formulations, zero-carb gluten-free dough |
Psyllium Husk Powder Granulation: 40, 60 & 100 Mesh
In addition to whole flakes, global buyers frequently require micro-pulverized psyllium powder. Because psyllium swells violently in the presence of water, grinding requires temperature-controlled micro-pulverizers under dust-controlled environments:
- 40 Mesh Powder: Coarser texture, rapid dispersibility without immediate clumping; ideal for clinical drink powders and cereal fortification.
- 60 Mesh Powder: Standard formulation granulation; balances smooth mouthfeel with hydration kinetics.
- 100 Mesh Superfine Powder: Velvet-like texture; dissolves seamlessly into bakery doughs, hydrocolloid meat binders, and hard gelatine capsule fillings without grittiness.
Microbiological & Heavy Metal Safety Testing
Because psyllium grows close to the sandy soil in arid zones, raw seeds can harbor environmental bacteria. Pharmaceutical buyers demand stringent microbiological compliance:
| Test Parameter | USP / EP Pharmacopoeial Limit | Shubham Agro Standard Batch |
|---|---|---|
| Total Aerobic Microbial Count (TAMC) | NMT 10,000 cfu/g | <1,000 cfu/g (Steam treated) |
| Total Combined Yeasts / Moulds (TYMC) | NMT 1,000 cfu/g | <100 cfu/g |
| Escherichia coli | Absent in 1 g | Absent in 10 g |
| Salmonella spp. | Absent in 10 g / 25 g | Absent in 25 g |
| Lead (Pb) | NMT 2.0 ppm | <0.5 ppm |
| Arsenic (As) | NMT 1.0 ppm | <0.2 ppm |
Export Packaging: Safeguarding Swell Capacity
Psyllium husk is exceptionally hygroscopic. Unprotected exposure to ocean humidity causes pre-mature hydration and irreversible clumping. Shubham Agro employs multi-barrier export packaging:
- Multi-Wall Kraft Paper Sacks (25 kg / 50 lbs): Built with an inner heat-sealed polyethylene moisture liner.
- Corrugated Export Cartons (20 kg / 25 kg): Outer heavy carton with double inner poly bags, preferred by European pharmaceutical repackers.
- Big Bags (FIBC 500 kg – 950 kg): Heavy polypropylene with form-fit poly liners for automated industrial unloading.
Frequently Asked Questions (FAQ)
Psyllium seed is the intact whole botanical seed (oval, boat-shaped, reddish-brown) containing roughly 25% husk and 75% core kernel. Psyllium husk is the pure, separated fibrous outer coating that contains 85% soluble dietary fiber and all the swelling capability.
Yes. For pharmaceutical and sensitive food applications, we provide dry steam-treated psyllium that achieves total plate counts below 1,000 cfu/g and certified absence of pathogens, without using chemical fumigants like ETO or gamma irradiation.
Due to its high bulk volume and lightweight nature, loose-stuffed 25 kg paper bags typically yield 9.0 to 10.5 metric tons per 20ft container. In high-cube 40ft containers, loading capacities range from 18.0 to 20.0 metric tons.
Yes. We can pack psyllium husk and powder into 250g, 500g, and 1kg food-grade HDPE jars or printed stand-up zipper pouches with your brand artwork, nutrition panels, and tamper-evident induction seals.
Direct Sourcing: Request a Certificate of Analysis and live price quote on our Psyllium Husk Product Page.
