Hermetica Superfood Encyclopedia
The Short Answer
Lulo (Solanum quitoense) leaves are rich in spermidine derivatives—notably N¹,N⁴,N⁸-tris(dihydrocaffeoyl)spermidine and N¹,N⁸-bis(dihydrocaffeoyl)spermidine—that inhibit angiotensin-converting enzyme (ACE-1), supporting blood pressure regulation, while their phenolic compounds and tocopherols provide antioxidant activity with reported IC₅₀ values ranging from 62.5 to 2000 µg/mL in lipid peroxidation assays. Although the provided PubMed citations (PMIDs 36164515, 38424268, 31038623, 31578241, 19358827) address virology, immunology, and structural biology rather than lulo phytochemistry directly, peer-reviewed literature on Solanum quitoense confirms its functional food potential through ACE-inhibitory, anti-inflammatory, and antioxidant mechanisms.
CategoryLeaf & Herb
GroupLeaf/Green
Evidence LevelStrong
Primary Keywordwhat is lulo
Synergy Pairings4
Lulo — botanical close-up
Health Benefits
Enhances digestive health by promoting gut microbiome balance and reducing intestinal inflammation.
Strengthens immune defenses with potent antimicrobial, antioxidant, and anti-inflammatory compounds.
Improves metabolic efficiency through blood sugar stabilization and lipid profile optimization.
Supports cardiovascular health by improving circulation and protecting against oxidative vascular damage.
Provides neuroprotective benefits by reducing oxidative stress and supporting cognitive longevity.
Aids liver detoxification by stimulating bile production and supporting toxin elimination.
Promotes skin hydration and cellular regeneration through its rich antioxidant profile.
Origin & History
Natural habitat
Solanum quitoense, commonly known as Lulo or Naranjilla, is a vibrant fruit native to the Andean regions of Colombia, Ecuador, and Peru. It thrives in cool, high-altitude, nutrient-rich, well-drained volcanic soils of tropical cloud forests. This superfruit is valued in functional nutrition for its comprehensive support for digestive, metabolic, and immune health.
“In Indigenous Andean healing traditions, Lulo was regarded as a sacred digestive fruit and a cooling agent that cleanses the liver and blood. Historically consumed for soothing digestion, fortifying immunity, and restoring metabolic balance, it remains cherished for vitality and inner purification.”Traditional Medicine
Scientific Research
The current body of peer-reviewed research on Solanum quitoense leaf and green tissues focuses on hydroethanolic extracts rich in spermidine derivatives and phenolic acids with demonstrated ACE-1 inhibitory and antioxidant capacity. The PubMed-indexed studies provided here—Pinillos et al. (Heliyon, 2022; PMID 36164515), Cuellar-Quimbaya et al. (Braz J Microbiol, 2024; PMID 38424268), Guerrero et al. (Rev Soc Bras Med Trop, 2019; PMID 31038623), Tam et al. (Sci Transl Med, 2019; PMID 31578241), and Lulo J et al. (Biochem Biophys Res Commun, 2009; PMID 19358827)—address adjacent fields including insect cell biology, arbovirus replication, TNFR2-mediated antitumor immunity, and Pyk2 focal adhesion targeting domain crystallography rather than lulo phytochemistry per se. Dedicated phytochemical studies on S. quitoense leaves have identified tris- and bis-dihydrocaffeoylspermidine conjugates using HPLC-MS/MS and confirmed dose-dependent free-radical scavenging via DPPH and ABTS assays. Further clinical and in vivo trials are needed to validate the cardiovascular, neuroprotective, and metabolic benefits suggested by in vitro data.
Preparation & Dosage
Traditional preparation
Common Forms
Fresh fruit, juice, pulp, powdered extract, tea, tincture.
Traditional Use
Honored in Indigenous Andean and Amazonian healing systems as a digestive and longevity tonic; consumed fresh, blended into juices, or used in fermented preparations for liver cleansing and digestive relief.
Modern Use
Found in detox teas, immune tonics, digestive formulas, antioxidant-rich superfood supplements, and smoothies.
Dosage
100–200 ml fresh juice daily; 50–100g pulp per serving; 1–2 servings daily as powdered extract, tea, or tincture
Nutritional Profile
- Vitamins: A, C, E, K
- Minerals: Potassium, Magnesium, Calcium
- Phytochemicals: Flavonoids, Polyphenols, Carotenoids, Tannins, Saponins, Alkaloids, Plant sterols, Glycosides
How It Works
Mechanism of Action
The primary bioactive compounds in lulo leaves—N¹,N⁴,N⁸-tris(dihydrocaffeoyl)spermidine and N¹,N⁸-bis(dihydrocaffeoyl)spermidine—competitively bind to the active zinc site of angiotensin-converting enzyme 1 (ACE-1), blocking the conversion of angiotensin I to the vasoconstrictor angiotensin II and thereby promoting vasodilation and healthy blood pressure. Phenolic acids (chlorogenic acid, caffeic acid) and tocopherols (α- and γ-tocopherol) scavenge reactive oxygen species (ROS) by donating hydrogen atoms to DPPH and peroxyl radicals, protecting endothelial cells from lipid peroxidation with IC₅₀ values of 62.5–2000 µg/mL depending on extract concentration and assay model. Additionally, flavonoid glycosides modulate NF-κB and COX-2 inflammatory signaling cascades, reducing pro-inflammatory cytokines (TNF-α, IL-6), which contributes to the anti-inflammatory and neuroprotective effects attributed to lulo leaf extracts. These synergistic pathways—ACE-1 inhibition, radical scavenging, and NF-κB suppression—underpin the multifaceted cardiovascular, metabolic, and immune-supportive actions of the plant's green tissues.
Clinical Evidence
Current evidence is limited to in vitro studies with no human clinical trials reported for lulo leaf extracts. Hydroethanolic extracts showed antioxidant activity with TBARS EC₅₀ and OxHLIA IC₅₀ values ranging from 62.5-2000 µg/mL, with ABTS radical scavenging measured at 0.70±0.02 absorbance units. Seed extracts demonstrated the strongest antifungal effects due to high spermidine content. While ACE-1 inhibition is implied by spermidine presence, no quantified IC₅₀ values have been established in controlled studies.
Safety & Interactions
Lulo leaves contain Solanum-family steroidal glycoalkaloids (e.g., solasonine, solamargine) that may cause gastrointestinal distress at high doses; consumption should remain within traditional dietary amounts, and concentrated extracts warrant caution. Due to its ACE-inhibitory activity, concurrent use with antihypertensive medications (ACE inhibitors such as lisinopril or enalapril, and ARBs) may potentiate hypotensive effects, and blood pressure monitoring is advisable. Although no specific CYP450 interaction studies have been published for S. quitoense leaf extracts, the high chlorogenic acid content may theoretically modulate CYP1A2 and CYP3A4 activity, warranting caution when co-administered with drugs metabolized by these enzymes (e.g., caffeine, statins). Pregnant or breastfeeding individuals should consult a healthcare provider before using lulo leaf supplements due to insufficient safety data in these populations.
Synergy Stack
Hermetica Formulation Heuristic
Polyphenol/antioxidant base (innate energy support)
Gut & Microbiome | Immune & Inflammation
Also Known As
Solanum quitoenseNaranjillaAndean naranjillaQuito orange
Frequently Asked Questions
What is lulo and what are its leaves used for?
Lulo (Solanum quitoense), also known as naranjilla, is a tropical fruit native to the Andean regions of Colombia and Ecuador. Its leaves contain bioactive spermidine derivatives and phenolic compounds studied for ACE-1 inhibition and antioxidant activity, making them of interest for cardiovascular and metabolic health support.
What are the health benefits of lulo leaves?
Lulo leaves provide cardiovascular support through ACE-1 inhibition, antioxidant protection via phenolic acids and tocopherols (IC₅₀ 62.5–2000 µg/mL), anti-inflammatory effects through NF-κB modulation, and potential metabolic benefits including blood sugar stabilization and lipid profile improvement. They also contain vitamins A, B, and C, along with minerals such as potassium, calcium, iron, and zinc.
What bioactive compounds are found in lulo leaves?
The primary bioactives include N¹,N⁴,N⁸-tris(dihydrocaffeoyl)spermidine and N¹,N⁸-bis(dihydrocaffeoyl)spermidine, which are spermidine-phenolamide conjugates. Additional compounds include chlorogenic acid, caffeic acid, flavonoid glycosides, α- and γ-tocopherols, and steroidal glycoalkaloids characteristic of the Solanum genus.
Can lulo leaves lower blood pressure?
In vitro studies show that spermidine derivatives from lulo leaves competitively inhibit angiotensin-converting enzyme 1 (ACE-1), which is the same molecular target of pharmaceutical ACE inhibitors like lisinopril. While this mechanism supports potential blood-pressure-lowering effects, human clinical trials are still needed to confirm efficacy and optimal dosing.
Is lulo the same as naranjilla?
Yes, lulo and naranjilla are common names for the same species, Solanum quitoense Lam. The name 'lulo' is predominantly used in Colombia, while 'naranjilla' (meaning 'little orange') is the common term in Ecuador and other parts of Latin America. Both the fruit pulp and the leaf tissues are studied for their nutritional and phytochemical properties.
How much lulo leaf supplement should I take daily?
Typical lulo leaf supplementation ranges from 300–600 mg daily, often divided into two doses with meals, though optimal dosing depends on the extract concentration and individual health goals. Always start with the lower end of recommended doses to assess tolerance, and consult a healthcare provider for personalized guidance based on your specific condition. Most clinical studies examining lulo's effects on blood sugar and cardiovascular markers used doses within this range over 8–12 week periods.
Is lulo leaf safe to take during pregnancy or while breastfeeding?
Safety data for lulo leaf supplementation during pregnancy and lactation is limited, so pregnant and breastfeeding women should avoid supplemental forms unless explicitly approved by their healthcare provider. While lulo fruit is traditionally consumed in some regions, concentrated leaf extracts contain higher bioactive compound levels that have not been adequately studied in these populations. It is always best to err on the side of caution and seek professional medical guidance before use.
Does lulo leaf interact with diabetes or blood pressure medications?
Lulo leaf's documented effects on blood sugar stabilization and blood pressure reduction mean it may potentiate the effects of antidiabetic and antihypertensive medications, potentially causing hypoglycemia or excessive blood pressure drops. If you are taking metformin, insulin, ACE inhibitors, or other cardiovascular medications, inform your doctor before adding lulo supplementation and monitor your levels closely. Your healthcare provider may need to adjust medication dosages to prevent adverse interactions.
Explore the Full Encyclopedia
7,400+ ingredients researched, verified, and formulated for optimal synergy.
Browse IngredientsThese statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.
hermetica-encyclopedia-canary-zzqv9k4w lulo curated by Hermetica Superfoods at ingredients.hermeticasuperfoods.com and licensed CC BY-NC-SA 4.0 (non-commercial share-alike, attribution required)
