Protein Extraction Plants

Defatted Rice Bran Protein Extract

Extraction Technologies

Subcritical Water Extraction (SWE)Enzyme-Assisted Extraction (EAE)Hybrid Extraction

Mechotech designs and manufactures turnkey extraction plants that process defatted rice bran to recover rice protein. We supply the machinery for the route selected after screening — raw-material preparation, extraction, separation, concentration or recovery, and drying or collection — configured to the target specification. Mechotech's technology screening identifies 3 candidate routes for defatted rice bran and rice protein: 2 high-priority and 1 exploratory screening fits, with Enzyme-Assisted Extraction (EAE) best-ranked (rank 6 of 100).

For defatted rice bran with rice protein as the target, there are 3 candidate technologies: Subcritical Water Extraction (SWE), Enzyme-Assisted Extraction (EAE) and Hybrid Extraction. By route — Subcritical Water (SWE): high-priority screening, rank 7 of 100, pressurized water; Enzyme-Assisted (EAE): high-priority screening, rank 6 of 100, water, enzyme and pH control; Hybrid: exploratory screening, rank 93 of 100, sequence selected by target. For the best-ranked route, Enzyme-Assisted (EAE), the screening flags: select cellulase/pectinase/protease by matrix; control enzyme cost and inactivation. These are screening candidates rather than guarantees: the final technology, operating parameters and plant configuration are established during process development and pilot validation. Product-contact parts are built in SS 316L with CIP-cleanable design, and automation is configured to the project.

Technical Specifications

Product	Defatted Rice Bran Protein Extract Plant
Feedstock	Rice bran defatted
Part / Feed Form	Defatted
Target Extract	Rice protein
Extraction Method	SWE, EAE, Hybrid
Technology Count	3
Product-contact Material	SS 316L, electropolished, CIP-cleanable
Automation	PLC-SCADA, configured to requirement

Plant Capacities

Plant Scale	Raw Material Throughput	Typical Use
Pilot	Configured to your feedstock and trial plan	Product development, parameter validation
Semi-Commercial	Configured to raw-material supply and buyer volume	Contract manufacturing, scale-up trials
Commercial	Configured to raw-material supply and confirmed buyer volume	Commercial production at confirmed buyer volume

Capacity is configured to raw-material supply and confirmed buyer volume; we recommend a pilot plant to validate process parameters before scaling. No fixed throughput is quoted for this product.

Manufacturing Process

Each extraction method follows a different process — pick a method to see its steps.

Raw-Material Preparation

Defatted rice bran is cleaned and size-reduced so rice protein can be reached by the extraction medium; particle size and moisture are set during process development.

Vessel Loading & Pressurisation

Prepared defatted rice bran and water are loaded into a pressure-rated extraction vessel.

Subcritical Water Extraction

Water held liquid under pressure at elevated temperature extracts rice protein without an organic solvent; temperature and residence time are set to limit thermal degradation and hydrolysis.

Separation

Spent solids are separated by filtration or centrifugation and the extract is clarified before concentration.

Concentration

The clarified aqueous extract is concentrated under vacuum or by membrane systems where required; no organic solvent is used in this route.

Recovery, Standardisation & Drying

The rice protein fraction is recovered from the concentrate by a route selected during process development and checked against the target specification; drying behaviour is verified because protein-type targets can be heat-sensitive.

Major Plant Equipment

Raw-material cleaning and size-reduction system
Pressure-rated hot-water extraction vessel
High-pressure water pump and heat exchangers
Jacketed enzyme reaction vessel with pH and temperature control
Enzyme dosing and inactivation system
Combined extraction train (stage equipment per the sequence selected during process development)
Filtration / centrifugation system
Vacuum evaporator
Membrane concentration unit (where required)
Solvent recovery system with condensers
Dryer (where a dried form is specified)
CIP (clean-in-place) system
Storage and finished-product tanks
PLC-SCADA control panel and instrumentation

Plant Output

Rice protein extract

Applications

Sports Nutrition
Plant-Based Dairy Alternatives
Infant Nutrition
Functional Foods
Bakery Products
Nutritional Beverages
Nutraceuticals
Cosmetics
Pharmaceutical Formulations
Clinical Nutrition

Key Features

Enzyme-Assisted (EAE) — High-Priority Screening Fit
Best-ranked route for defatted rice bran: rank 6 of 100 in Mechotech's enzyme-assisted extraction screening, using water, enzyme and pH control. Ranks are directional screening priorities, not measured yield, ROI or plant guarantees.
Rice bran defatted — 3 Candidate Routes
Routes screened for defatted rice bran: Subcritical Water (SWE) — high-priority, rank 7; Enzyme-Assisted (EAE) — high-priority, rank 6; Hybrid — exploratory, rank 93. Each route has its own process tab above.
Defatted Feed Form
The candidate routes are defined for defatted rice bran; feedstock assay and moisture are measured as pilot inputs and the feed form is set during process development.
Parameters Fixed After Pilot Trials
Recovery of rice protein, selectivity, solvent or water duty, quality and cleaning are measured in pilot trials, starting with small-scale feed trials, before final plant parameters are fixed.
SS 316L Hygienic Construction
Product-contact surfaces are SS 316L and CIP-cleanable, in a hygienic design suited to food, nutraceutical and pharmaceutical supply chains; PLC-SCADA automation with recipe control can be configured to the project scope.

Frequently Asked Questions

What is a defatted rice bran extraction plant for rice protein?

It is a turnkey Mechotech plant that processes defatted rice bran to recover rice protein. The plant covers raw-material preparation, extraction, separation, concentration or fraction collection, and drying or packing, and is configured to the target specification. It sits within Mechotech's wider range of protein extraction plants.

Which plant part or feed form does the defatted rice bran plant process?

The candidate feedstock is defatted rice bran. The target extract is rice protein.

Which extraction technologies are suitable for defatted rice bran?

This feedstock has 3 candidate technologies: Subcritical Water Extraction (SWE) (high-priority screening), Enzyme-Assisted Extraction (EAE) (high-priority screening) and Hybrid Extraction (exploratory screening). See the related pages on subcritical water extraction, enzyme-assisted extraction and hybrid extraction. These are screening candidates, not guarantees of yield, purity or recovery; the route is confirmed through process development and pilot validation. In Mechotech's technology screening these candidates are ranked directionally — high-priority: Subcritical Water Extraction (rank 7 of 100), Enzyme-Assisted Extraction (rank 6 of 100); exploratory: Hybrid Extraction (rank 93 of 100). Ranks are directional screening priorities at method-family level, not measured yield, ROI or plant guarantees.

How does Mechotech's screening rank the candidate routes for defatted rice bran?

Each technology list in Mechotech's screening ranks 100 feedstock–target opportunities (1 = highest priority). For defatted rice bran: Subcritical Water (SWE) rank 7 (high-priority); Enzyme-Assisted (EAE) rank 6 (high-priority); Hybrid rank 93 (exploratory). The best-ranked route is Enzyme-Assisted (EAE). Ranks are directional screening priorities, not measured yield, ROI or plant guarantees, and the evidence is at method-family level, so every route needs pilot validation.

How does the defatted rice bran extraction process work?

Each listed route has its own steps — Subcritical Water (SWE): Vessel Loading & Pressurisation → Subcritical Water Extraction → Separation; Enzyme-Assisted (EAE): Slurry & pH Control → Enzymatic Treatment → Enzyme Inactivation & Separation; Hybrid: Stage Sequence Selection → First Assisted Stage → Second / Combined Stage. All routes share the same outline: prepare defatted rice bran, extract rice protein using the technology-specific step, separate and clarify the extract, concentrate it, and recover, standardise and dry. The process tabs above show every step.

What equipment does the defatted rice bran extraction plant include?

The equipment follows the selected route and includes raw-material cleaning and size-reduction system; pressure-rated hot-water extraction vessel; high-pressure water pump and heat exchangers; jacketed enzyme reaction vessel with pH and temperature control; enzyme dosing and inactivation system; combined extraction train (stage equipment per the sequence selected during process development); filtration / centrifugation system; vacuum evaporator. The full list is shown under Major Plant Equipment.

What output and specification can the defatted rice bran plant deliver?

The listed output is rice protein extract. The plant is configured to a customer-declared specification for rice protein. No fixed purity, grade or yield is claimed until pilot results are available.

What application areas are listed for Defatted Rice Bran Protein Extract?

The application areas listed on this page are: Sports Nutrition; Plant-Based Dairy Alternatives; Infant Nutrition; Functional Foods; Bakery Products; Nutritional Beverages; Nutraceuticals; Cosmetics; Pharmaceutical Formulations; Clinical Nutrition.

Which related Mechotech extraction pages cover the same material or target?

Whole rice bran is covered on the Rice Bran Ferulic Acid, Oryzanol Oil and Protein Extract page and DORB on the DORB Rice Protein Extract page. Mechotech also publishes a rice bran protein isolate case study.

How does this page differ from the DORB Rice Protein Extract page?

This page follows the screening entry for defatted rice bran, which lists three candidate technologies for rice protein: subcritical water, enzyme-assisted and hybrid extraction. The DORB Rice Protein Extract page follows the separate entry labelled DORB (defatted), which lists two of them, subcritical water and enzyme-assisted extraction. The route is confirmed through process development and pilot validation.

What capacity is available and is a pilot trial recommended?

Capacity is configured to requirement. Mechotech's technology screening recommends starting with small-scale feed trials to measure recovery, selectivity, solvent or water duty, quality and cleaning before pilot and commercial plant sizes are fixed.

Ready to discuss your project?

Get a free quote and technical consultation from our engineering team.

Get A Free Quote

Defatted Rice Bran Protein Extract