Herbs (Global Traditional) · African
Aloe Vera (Aloe barbadensis miller)
Strong Evidencebotanical
Hermetica Superfood Encyclopedia
Aloe vera (Aloe barbadensis miller) is a succulent plant containing bioactive compounds like aloin, acemannan, and anthraquinones. The gel's polysaccharides primarily work through anti-inflammatory pathways and wound healing mechanisms.
Aloe vera (Aloe barbadensis Miller) is a succulent perennial plant native to the Arabian Peninsula, now cultivated globally for its gel-rich leaves. The bioactive compounds are extracted from inner leaf gel using methods including hand-filleting, ethanol Soxhlet extraction for acemannan, and ultrasound-assisted extraction with methanol for aloin.
The research dossier contains no human clinical trials, RCTs, or meta-analyses for Aloe vera. All available sources focus exclusively on extraction techniques and chemical characterization rather than clinical efficacy or safety data.
No clinically studied dosage ranges are available in the research. The sources only describe extraction methods without reference to human trials or standardization levels. Consult a healthcare provider before starting any new supplement.
Aloe vera gel (inner leaf) composition per 100g fresh weight: Water content 98.5-99.5g (primary constituent). Carbohydrates: Total 0.3-0.4g, predominantly acemannan (acetylated mannose polymer, 0.2-0.3%), a key bioactive polysaccharide; also contains glucose, fructose, and sucrose in trace amounts. Protein: 0.1g, comprising lectins and small glycoproteins including aloctin A and B. Fat: <0.1g. Fiber: Approximately 0.3g, largely from mucilaginous polysaccharides. Key bioactive compounds: Acemannan (β-1,4-linked acetylated mannan) at 1,500-2,000 mg/L in gel juice — the most studied immunomodulatory compound; Aloin A and B (barbaloin anthraquinones) concentrated in the latex layer at 0.1-0.5% dry weight — largely absent in properly processed inner gel; Aloe-emodin at trace levels in processed gel; Chromone compounds (aloesin, aloeresin) at approximately 0.015-0.070% in gel. Micronutrients: Vitamin C approximately 4-8mg/100g; Vitamin E (α-tocopherol) approximately 0.1mg/100g; Vitamin B12 trace (0.02-0.1μg/100g, notably rare in plant sources but low bioavailability); Calcium 9.4mg/100g; Magnesium 8.3mg/100g; Potassium 150mg/100g; Sodium 11mg/100g; Zinc 0.07mg/100g; Manganese 0.08mg/100g. Enzymes present: Amylase, lipase, bradykinase, cellulase, carboxypeptidase, catalase — activity is highly processing-dependent. Amino acids: 20 amino acids identified including 8 essential amino acids in small quantities; total amino acid content approximately 0.1g/100g. Phenolic compounds: Total phenolics approximately 13-30mg GAE/100g fresh gel. Bioavailability notes: Acemannan bioavailability is pH-sensitive and degrades under gastric acid conditions; enteric or stabilized formulations improve systemic absorption. Anthraquinones (aloin) are largely removed in commercial 'decolorized' or 'purified' gel products. Vitamin and mineral concentrations are nutritionally insignificant at typical consumption volumes (30-60ml/day). Whole-leaf preparations contain substantially higher anthraquinone content versus inner-fillet gel — a critical distinction for safety and composition profiling. Polysaccharide molecular weight (MW 10,000–800,000 Da depending on processing) significantly affects biological activity and gut fermentability.
Aloe vera's acemannan polysaccharides modulate immune responses by activating macrophages and stimulating cytokine production. The anthraquinone compounds like aloin affect prostaglandin synthesis pathways, potentially reducing inflammatory markers. Glycoproteins in aloe gel may promote collagen synthesis and fibroblast proliferation in tissue repair processes.
Current research on Aloe barbadensis miller lacks human clinical trials and randomized controlled studies. Available scientific literature focuses primarily on extraction methods and chemical composition analysis rather than therapeutic efficacy. Without clinical data, evidence quality cannot be assessed and no verified health benefits can be established. Traditional uses remain undocumented in peer-reviewed sources.
Oral aloe vera latex containing anthraquinones may cause gastrointestinal cramping, diarrhea, and electrolyte imbalances. Topical applications can trigger contact dermatitis in sensitive individuals. Aloe may interact with diabetes medications by enhancing hypoglycemic effects and with anticoagulants by increasing bleeding risk. Pregnant and breastfeeding women should avoid oral aloe consumption due to potential uterine contractions.
