Hermetica Superfood Encyclopedia
Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.
Review flags: AWAITING_SEMANTIC_VALIDATION
Magnolia bark (Magnolia officinalis) contains bioactive compounds magnolol and honokiol that modulate GABA receptors and cortisol pathways. These compounds demonstrate clinical benefits for reducing menopausal symptoms, supporting stress management, and exhibiting antimicrobial properties.
Origin & History
Magnolia bark derives from Magnolia officinalis Rehder & E.H. Wilson, a tree native to China used in traditional Chinese medicine for over 1,000 years. The bark is typically dried and powdered, with extracts prepared via ethanol extraction or infusion for teas, standardized to contain at least 2.0% combined honokiol and magnolol according to the European Pharmacopoeia.
Research Narrative (Provisional)
Clinical evidence includes a randomized controlled trial (PMID: 21311416) in 89 menopausal women showing magnolia bark extract improved anxiety, irritability, and insomnia, and a pilot RCT (PMID: 16454147) in 28 overweight women finding 87.5 mg twice daily prevented significant weight gain. However, human RCTs are limited to small samples (n=28-89) focused on menopause and weight management, with no large-scale meta-analyses identified.
Preparation & Dosage
Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.
Nutritional Profile
{"macronutrients": {"fiber": "Not significant", "protein": "Not significant"}, "micronutrients": {"vitamins": "Not significant", "minerals": "Not significant"}, "bioactive_compounds": {"magnolol": "Approximately 2-10% of bark extract", "honokiol": "Approximately 1-5% of bark extract", "bioavailability_notes": "Magnolol and honokiol are lipophilic and may have enhanced absorption when consumed with dietary fats."}}
Reported Mechanism (Provisional)
Magnolol and honokiol, the primary bioactive compounds in magnolia bark, act as positive allosteric modulators of GABA-A receptors, enhancing GABAergic neurotransmission to produce anxiolytic effects. These compounds also inhibit cortisol release by modulating the hypothalamic-pituitary-adrenal (HPA) axis and demonstrate antimicrobial activity by disrupting bacterial cell wall synthesis. Additionally, magnolol activates peroxisome proliferator-activated receptor-gamma (PPAR-γ) pathways involved in glucose and lipid metabolism.
Clinical Narrative (Provisional)
A randomized controlled trial (n=89) demonstrated that magnolia bark extract significantly reduced menopausal symptoms including anxiety, irritability, and insomnia over 24 weeks. A smaller pilot RCT (n=28) showed preliminary evidence for preventing stress-related weight gain, though larger studies are needed. In vitro studies confirm antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa, but human antimicrobial efficacy requires clinical validation. Current evidence is moderate for menopausal symptoms but limited for other applications.
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