SOURCE OF PROTEINS

📋 Quick facts

Quick Facts:

• Category: other
• Also Known As: Proteinquelle, Proteiinin lähde, Източник на белтъчини, Fuente de proteínas, Izvor proteina, Fonte de proteínas, Source de protéines, Font de proteïna, Källa till protein, Fonte di proteine, källa till protein, proteinquelle, izvor proteina, fonte di proteine, source de protéines, fonte de proteínas

Proven Benefits At A Glance:

• Rapeseed meal contains storage proteins (cruciferin and napin) with antioxidant and antihypertensive properties
• Duckweed is an emerging aquatic plant protein source that can be broken down into bioactive peptides
• When duckweed proteins are enzymatically processed, they may support ACE inhibition (relevant to blood pressure regulation)
• Fruit and vegetable peels contain both proteins and phenolic compounds with antioxidant activity
• Research on these plant proteins is still developing; most studies are in early phases

📊 Comedogenicity

🛡️ Safety rating

Safety tier is a starting heuristic from regulatory status and comedogenic rating, not a dermatological verdict — see our Terms for the full disclaimer. Research confidence reflects how many real cited studies back this ingredient, not the strength of their findings.

🌍 Regulatory Status

💧 Skin Type Compatibility

⚠️ Don’t Combine With

📚 Research & Evidence

🔬 The Science

Plant-based proteins are getting attention as alternative sources for skincare and wellness applications, though most current research focuses on their internal health benefits rather than topical use. #1: Rapeseed meal (a byproduct from oil production) contains two main storage proteins called cruciferin and napin, alongside phenolic compounds—naturally occurring plant chemicals. According to research in a 2026 peer-reviewed journal, these components have been associated with antioxidant activity (meaning they may help neutralize unstable molecules called free radicals), antihypertensive effects (related to blood pressure), and potential antimicrobial properties. However, the same source notes that exactly how phenolic compounds and proteins interact with each other to create these effects remains understudied.

#2: Duckweed, a small floating aquatic plant, is emerging as a protein source that can be broken down through enzymatic hydrolysis (a process using specific enzymes to split proteins into smaller peptide chains). A 2024 study found that when duckweed was processed with various enzymes, the resulting peptides and released phenolic compounds showed significant ACE-inhibitory activity—meaning they may support healthy blood pressure regulation in the body. Specifically, certain processed fractions showed 6- to 8-fold increases in ACE inhibitory activity. The researchers noted this was the first study to specifically investigate duckweed protein hydrolysis for therapeutic peptide applications. #3: Fruit and vegetable peels (from tomatoes, watermelons, and apples) contain extractable proteins and phenolic compounds with antioxidant properties, according to 2022 research.

Watermelon peels showed particularly high protein content. Apple peels demonstrated the strongest antioxidant activity across multiple testing methods. This suggests that food waste streams contain bioactive compounds of potential interest, though application to skincare would require additional research. Important limitation: Most research cited focuses on oral consumption or internal health benefits (blood pressure, antioxidant activity). Direct evidence for topical skincare applications of these plant proteins is not covered in these sources. The field is evolving, and these remain early-stage research findings.

📄 Related Research

Matched by search — not necessarily verified support for every statement above.

• Sarwar R et al. (2026). Rapeseed Meal as a Sustainable Source of Proteins, Peptides, and Phenolics: Composition, Interactions, and Functional Potential. a peer-reviewed journal.
• Bernier MÈ et al. (2024). Enzymatic Hydrolysis of Water Lentil (Duckweed): An Emerging Source of Proteins for the Production of Antihypertensive Fractions. a peer-reviewed journal.
• Mellinas C et al. (2022). Valorization of Agro-Industrial Wastes by Ultrasound-Assisted Extraction as a Source of Proteins, Antioxidants and Cutin: A Cascade Approach. a peer-reviewed journal.
• Anitua E et al. (2004). Autologous platelets as a source of proteins for healing and tissue regeneration. a peer-reviewed journal.

🧴 Products Containing SOURCE OF PROTEINS