Asahi Kasei Corporation

Asahi Kasei Corporation’s Ceolus™ microcrystalline cellulose is a purified and partially depolymerized cellulose supplied as a white, odorless, water-insoluble powder. Its downstream application is confined to sectors where particle-size distribution, plastic deformation under compression, and low batch-to-batch variance are verified against pharmacopoeial monographs, food registration, or process-specific firing trials. The six application tracks below are limited to documented industrial uses: direct compression oral solid dosage manufacture, nutraceutical capsule filling, veterinary wet granulation, frozen and heat-processed food systems, pressed-powder cosmetics, and ceramic honeycomb extrusion. Each track records the applicable compliance basis, formulation addition ratio, downstream production process, and terminal finished product categories.

Direct compression lines processing oral solid dosage forms use Ceolus™ PH-102 as a ductile compression excipient with high diluent capacity and low elastic recovery. In dry blends, Ceolus™ PH-102 is dosed at 10–60 wt%; lactose monohydrate or dicalcium phosphate dihydrate at 20–70 wt%; crospovidone or croscarmellose sodium at 2–4 wt%; colloidal silicon dioxide at 0.1–0.5 wt%; and magnesium stearate lubricant at 0.5–1.5 wt%. The downstream process uses bin blenders operating at 10–20 rpm for 15–30 min, followed by rotary tablet presses running at 40,000–120,000 tablets/h with precompression force 5–15 kN and main compression force 10–30 kN. Tablet hardness is maintained between 40–80 N; friability is measured per USP <1216> and held below 1.0%. Ejection force fluctuations above the line average are used to detect lubricant migration and over-blending. Compliance is anchored to Ph. Eur. monograph 0316, the USP-NF Microcrystalline Cellulose monograph, ICH Q3D elemental impurity risk assessment, and EU GMP Part II. Terminal finished product categories include immediate-release antihypertensive tablets, analgesic tablets, antidiabetic tablets, and multivitamin tablets.

What governs the moisture-uptake threshold in Ceolus™ PH-101 filled nutraceutical capsules?

Moisture sorption in nutraceutical capsule formulations is governed by the equilibrium moisture content of the botanical extract, the cellulose grade, and the barrier properties of the shell polymer. Ceolus™ PH-101 is incorporated at 15–45 wt% of the fill formulation; botanical extracts are present at 20–60 wt%; magnesium stearate at 0.25–1.0 wt%; colloidal silicon dioxide at 0.5–2.0 wt%; and optional maltodextrin filler at 5–15 wt%. The downstream process uses tumble blending at 10–20 rpm for 15–30 min, followed by pin-type capsule filling machines operating with 3–5 tamps, fill weights of 250–700 mg, and speeds of 3,000–12,000 capsules/h. If fill blend moisture exceeds 6%, tamping-pin sticking becomes measurable through weight variation and shell deformation. Compliance is verified against the USP-NF Microcrystalline Cellulose monograph, 21 CFR Part 111 dietary supplement GMP, ISO 22000:2018, and USP <2040> Disintegration of Dietary Supplements. Terminal finished product categories include two-piece HPMC botanical extract capsules, amino acid capsules, probiotic capsules, and sports nutrition capsules.

Wet granulation endpoint control limits for Ceolus™ KG-802 in high-shear veterinary bolus manufacture

The end point in high-shear wet granulation is determined by impeller power draw, chopper speed, granule size distribution, and liquid addition rate. Ceolus™ KG-802 is added at 5–20 wt%; drug premix at 15–40 wt%; maize starch at 10–25 wt%; povidone K30 binder at 1–5 wt%; and purified water at 20–40 wt% during granulation. The high-shear granulator is operated with impeller speed 200–500 rpm, chopper speed 1,500–3,000 rpm, and wet massing time 2–5 min. Wet granules are transferred to a fluid-bed dryer set at 60–70 °C and dried to final moisture 2–5%; dried granules are compressed at 20–40 kN. Overmassing beyond 5 min reduces granule friability but increases oversize granules above 1.25 mm; water addition below 20% yields weak tablets with pressing defects. Compliance is anchored to Ph. Eur. 2.9.5 uniformity of mass, Ph. Eur. 2.9.7 friability, VICH stability guidance, and ISO 9001:2015. Terminal finished product categories include anthelmintic boluses, anti-inflammatory veterinary boluses, rumen-delivery boluses, and mineral supplement boluses.

At 80–85 °C pasteurization temperature and subsequent two-stage homogenization at 150–250 bar, Ceolus™ microcrystalline cellulose disperses into colloidal gel networks in frozen dessert and heat-processed food systems. The material is added at 0.5–3.0 wt% in ice cream mix, 0.2–1.5 wt% in retort sauces, and 1.0–2.5 wt% in low-fat dressings. The downstream process includes high-shear dispersion at 1,500–3,000 rpm, pasteurization, aging at 4 °C for 4–12 h, and freezing in a scraped-surface freezer with overrun controlled at 40–100%. In retort systems, the dispersion is maintained through the thermal process; inadequate high-shear mixing produces visible cellulose aggregates and a sandy mouthfeel in low-viscosity sauces. Compliance is anchored to FDA 21 CFR 182.1745, EU Regulation (EC) No 1333/2008 Annex II for E460(i), JECFA 2023, and FSSC 22000. Terminal finished product categories include low-fat ice cream, frozen yogurt, retort-stable cream sauces, low-fat salad dressings, and bakery fillings.

At 20–60 bar compaction pressures in pressed-powder cosmetics

Oil absorption in pressed-powder cosmetics is a function of particle shape, bulk density, and binder distribution. Ceolus™ UF-711 is used at 5–18 wt%; talc at 30–60 wt%; mica at 10–30 wt%; kaolin at 5–15 wt%; binder at 3–8 wt%; and preservative at ≤1.0 wt%. The production sequence uses a high-speed mixer at 1,000–3,000 rpm, sieving through 100–200 mesh, and pressing at 20–60 bar in aluminum pans. Drying is controlled to moisture below 3%. Pressing above 60 bar induces binder migration to the pan surface, producing mottled films and inconsistent payoff; pressing below 20 bar yields weak cakes and edge fracture after repeated drop testing. Compliance is anchored to EU Cosmetics Regulation (EC) No 1223/2009 safety assessment and ISO 22716 cosmetic GMP. Terminal finished product categories include compact foundation, eyeshadow pans, blush, and oil-control finishing powder.

When Ceolus™ ceramic-grade MCC replaces polymer binders in honeycomb extrusion

Ceramic honeycomb extrusion grades require a burnout binder that leaves no inorganic residue in the fired matrix and maintains green strength through de-airing and drying. Ceolus™ ceramic-grade microcrystalline cellulose is added at 2–6 wt% of dry inorganic mass; hydroxypropyl methylcellulose at 2–4 wt%; water at 16–22 wt%; and plasticizer at 1–3 wt%; the balance consists of inorganic oxides and process aids. The downstream process uses a sigma-blade kneader at 20–80 rpm for 30–60 min, vacuum pug mill de-airing at -0.08 to -0.095 MPa, and extrusion at 20–40 bar. Extruded green honeycombs are dried in microwave or RF dryers at 60–90 °C to moisture below 2%, then fired at 500–1400 °C. Incomplete binder burnout below 500 °C leaves carbon residue in the ceramic matrix and degrades catalyst washcoat adhesion. Compliance is anchored to ISO 9001:2015, ASTM C133-97 for fired mechanical evaluation, and OEM catalyst substrate geometric surface area and washcoat adhesion specifications. Published data for exact replacement ratios in full-size diesel particulate filter segments is limited; the addition range is derived from binder burnout studies and extrusion trials. Terminal finished product categories include automotive catalytic converter honeycombs, diesel particulate filter segments, and industrial catalyst supports.