Directly dispatched from our logistics depots, our core product lineup represents the state-of-the-art in plant-based peptide synthesis and nutritional density.
The global transition toward sustainable nutrition is reshaping the raw material landscape in Europe. As a vital economic gatekeeper of the Iberian Peninsula, Barcelona has emerged as a key industrial hub for food technology innovation, health wellness manufacturing, and high-performance cosmetics. Within this dynamic ecosystem, the demand for clean-label, hypoallergenic vegetal proteins has spiked dramatically.
Rice protein—specifically isolates and enzymatically hydrolyzed variants—stands at the forefront of this revolution. Unlike soy or wheat proteins, rice protein bypasses major food allergen regulations while providing an exceptionally high concentration of amino acids, particularly cysteine and methionine. This whitepaper analyzes the current commercial landscape, extraction innovations, and application horizons for rice protein within the industrial corridors of Barcelona, establishing a strategic bridge between Far East manufacturing prowess and European distribution networks.
Catalonia’s food industry is one of the most productive sectors in southwestern Europe. Key manufacturing belts surrounding Barcelona, including El Valles, El Baix Llobregat, and the free-trade zones near the Port of Barcelona, host sophisticated processing plants that demand reliable bulk suppliers of high-purity ingredients. This industrial ecosystem relies heavily on external supply chains that can guarantee rigorous quality standards (e.g., ISO, Halal, Kosher, and Organic certifications).
Globally, the rice protein market size is projected to reach over USD 250 million by 2030, driven by the expansion of vegan lifestyles, sports nutrition, and clean-label bakery goods. Local distributors in Barcelona are experiencing a bottleneck due to strict European regulatory frameworks regarding heavy metal residue and microbiological thresholds. This is where high-quality, pre-screened supply partners with advanced extraction lines step in, mitigating customs clearance risks and offering consistent batch-to-batch quality.
The production of premium rice protein from non-GMO brown rice involves advanced biochemical processes to isolate the protein while preserving its biological value. The standard industrial methodology deployed by leading factories relies on enzymatic processes rather than chemical solvent extractions:
Rice starch is liquefied using food-grade amylase enzymes. This step separates the soluble sugars (glucose) from the insoluble protein-rich cake. Controlling temperature and pH profiles prevents the denaturation of fragile peptide chains, ensuring the final protein retains its natural functional properties.
The isolated protein slurry undergoes multiple stages of microfiltration to eliminate trace fibers and fats. It is then concentrated and spray-dried in high-altitude towers to produce a powder ranging from 80 to 300 mesh. A finer mesh size (such as 300 mesh) is critical for beverage and cosmetic formulations to avoid a gritty mouthfeel or unstable suspension.



For food-tech labs and production plants based in Catalonia, rice protein serves multiple functional roles:
Barcelona’s massive fitness sector demands premium protein shakes and bars. High-purity hydrolyzed rice protein provides a complete amino acid profile when blended with pea protein, yielding a PDCAAS (Protein Digestibility-Corrected Amino Acid Score) value close to 1.0, similar to whey.
Many of Spain’s major cosmetics brands are located around Barcelona. Hydrolyzed rice peptides are widely utilized in skincare and hair care products to retain moisture, improve skin elasticity, and enhance hair tensile strength due to their film-forming properties.
Functional bakeries in Spain use rice protein alongside plant fibers (like Konjac) to create gluten-free, low-carb breads and pasta. These products support the growing demand for dietary solutions catering to diabetic and gluten-sensitive demographics.
Small-molecule oligopeptides are highly hypoallergenic, making them suitable for baby foods. Their natural buffering properties also act as acidity regulators without the need for synthetic additives, supporting clean-label formulations.
Dongguan Tsrel Biology Co., Ltd. is a professional China vegetal protein manufacturer specializing in the research, development, production, and supply of high-quality plant protein ingredients for food, beverage, and nutritional applications. With a strong focus on innovation, sustainability, and quality assurance, the company is dedicated to providing reliable plant-based ingredient solutions to customers worldwide.
Equipped with advanced manufacturing facilities and modern processing technologies, Dongguan Tsrel Biology offers a comprehensive range of vegetal proteins, including soy protein, pea protein, rice protein, wheat protein, and other specialty plant proteins. These ingredients are widely used in functional foods, nutritional supplements, sports nutrition products, dairy alternatives, meat alternatives, beverages, bakery products, and health food applications.



Innovation is a key driving force behind the company's growth. Supported by an experienced research and development team, Dongguan Tsrel Biology continuously explores new technologies and application solutions to meet the evolving demands of the global food and nutrition industries. The company also provides customized ingredient solutions to help customers optimize product formulations, improve nutritional profiles, enhance texture, and create clean-label products.
Quality and food safety are integrated into every stage of production. From raw material sourcing and processing to final testing and packaging, strict quality control procedures are implemented to ensure product consistency, purity, safety, and compliance with international standards. This commitment enables the company to deliver dependable products that meet the rigorous requirements of global customers.



With customer satisfaction at the center of its operations, competitive manufacturing capabilities, stable supply chains, and professional technical support, Dongguan Tsrel Biology Co., Ltd. has established long-term partnerships with food manufacturers, distributors, and brand owners across international markets, including direct shipping lanes and distribution hubs serving Barcelona.
Buying bulk raw materials from overseas requires meticulous logistics management. For businesses operating in Spain, we offer streamlined solutions designed to minimize lead times and ensure regulatory compliance:
To facilitate seamless importing, we support multiple shipping arrangements (FOB, CIF, and DDP) directly to the Port of Barcelona. Our documents meet all European Union customs regulations, including full allergen declarations, pesticide residue limits, and heavy metal testing certificates aligned with EFSA guidelines.
We offer packaging flexibility, from 20kg paper bags for craft bakeries and boutique cosmetics manufacturers to 1-ton bulk bags for large-scale industrial food plants. We can customize particle sizes down to 325 mesh for optimal dispersion in liquid formulations.
To assist purchasing managers, R&D scientists, and logistics heads in Barcelona, our technical team has answered the most common questions regarding bulk sourcing of rice protein.
Our complete portfolio includes dietary fibers, konjac functional blends, and specialized grade proteins designed for custom formulations.