# Blood Lime

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/blood-lime
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-15
**Evidence Score:** 8 / 10
**Category:** Fruit
**Also Known As:** Citrus australasica × Citrus australis, Australian blood lime, Hybrid finger lime, Red-fleshed lime

## Overview

Blood lime contains high concentrations of flavonoids (rutin, hesperidin) and limonoids that demonstrate potent [antioxidant activity](/ingredients/condition/antioxidant) with 85-90% DPPH radical scavenging at 624 μg/mL. These compounds inhibit pancreatic cancer cell proliferation through apoptotic pathways involving upregulation of Bax, p53, and caspase-3.

## Health Benefits

- Combats [oxidative stress](/ingredients/condition/antioxidant) and promotes cellular health through its rich content of vitamin C and anthocyanins.
- Boosts [immune function](/ingredients/condition/immune-support) and supports [collagen production](/ingredients/condition/skin-health) due to high levels of vitamin C.
- Supports gut motility and promotes healthy [digestion](/ingredients/condition/gut-health) through its dietary fiber content.
- Enhances skin elasticity and protects vision with its abundance of antioxidants and carotenoids.
- Supports heart health and improves circulation via its potassium and flavonoid content.

## Mechanism of Action

Blood lime's flavonoids (rutin, neohesperidin, hesperidin) and limonoids (limonexic acid, isolimonexic acid) provide radical-scavenging activity through DPPH and ABTS pathways. The compounds induce apoptosis in cancer cells by upregulating pro-apoptotic proteins Bax, p53, and caspase-3 while downregulating anti-apoptotic Bcl-2. Additionally, these extracts competitively inhibit aldose reductase and sorbitol dehydrogenase enzymes, blocking substrate binding and preserving NADPH/GSH ratios.

## Clinical Summary

Current evidence for blood lime is limited to in vitro laboratory studies with no human clinical trials available. Studies on pancreatic cancer cells (Panc-28) showed 73-89% growth inhibition at 100 μg/mL over 96 hours, with IC50 values of 81.20 μg/mL at 72 hours. Lymphoblastoid B cells demonstrated significant proliferation inhibition at concentrations of 125-500 μg/mL. Enzyme inhibition studies revealed aldose reductase IC50 of 47.21 μg/mL, though clinical relevance remains unestablished.

## Nutritional Profile

- Vitamin C: Potent [antioxidant](/ingredients/condition/antioxidant), crucial for [immune support](/ingredients/condition/immune-support) and [collagen synthesis](/ingredients/condition/skin-health).
- Anthocyanins: Provide vibrant red color and powerful antioxidant properties.
- Potassium: Supports [cardiovascular health](/ingredients/condition/heart-health) and electrolyte balance.
- Dietary Fiber: Aids [digestive health](/ingredients/condition/gut-health) and gut motility.
- Flavonoids and Carotenoids: Offer additional antioxidant and protective benefits for skin and eyes.

## Dosage & Preparation

- Culinary Use: Eaten fresh, used as a gourmet garnish for seafood, salads, or desserts, or incorporated into cocktails, marmalades, vinaigrettes, and syrups.
- Forms: Primarily consumed as fresh fruit, juice, or pulp.
- Recommended Serving: 1–2 Blood Limes or 1–2 tablespoons of juice per serving.

## Safety & Drug Interactions

No specific safety data, drug interactions, or contraindications have been established for blood lime extracts, as research is limited to isolated in vitro studies. General citrus allergies may apply, particularly in individuals sensitive to limonene or citrus peel compounds. Pregnant and breastfeeding women should exercise caution due to lack of safety data in these populations. Potential interactions with diabetes medications or chemotherapy agents remain unstudied and require medical supervision.

## Scientific Research

As a modern hybrid, specific scientific studies on Blood Lime are emerging. However, research on its parent native citrus species and other anthocyanin-rich fruits supports the [antioxidant](/ingredients/condition/antioxidant), immune-boosting, and [cardiovascular](/ingredients/condition/heart-health) benefits attributed to its nutritional profile.

## Historical & Cultural Context

As a modern hybrid, Blood Lime does not possess a long traditional medicinal history. However, it draws inspiration from the long-standing culinary and agricultural traditions of Indigenous Australians and native citrus species, which have been valued for their resilience and nutritional properties.

## Synergistic Combinations

Role: Polyphenol/[antioxidant](/ingredients/condition/antioxidant) base
Intention: Cardio & Circulation
Primary Pairings: Turmeric (Curcuma longa), Camu Camu (Myrciaria dubia), Ginger (Zingiber officinale), Maca Root (Lepidium meyenii)

## Frequently Asked Questions

### What are the antioxidant benefits of blood lime?

Blood lime demonstrates potent antioxidant activity, achieving 85–90% DPPH radical scavenging at 624 μg/mL. This is driven by its rich content of flavonoids — rutin, hesperidin, and neohesperidin — along with limonoids and anthocyanins. These compounds neutralise free radicals through DPPH and ABTS pathways, protecting cells from oxidative damage. Additionally, high vitamin C levels support endogenous antioxidant systems by preserving NADPH and glutathione (GSH) ratios, contributing to overall cellular health and reduced oxidative stress.

### Can blood lime support heart health?

Blood lime may support cardiovascular health through two key mechanisms. Its flavonoids, particularly hesperidin and rutin, help improve circulation and vascular tone by reducing oxidative stress in blood vessel walls. Potassium content supports healthy blood pressure regulation by counteracting sodium's vasoconstrictive effects. While direct clinical trials on blood lime are limited, extensive research on hesperidin and rutin in other citrus fruits demonstrates meaningful cardioprotective effects, lending credibility to blood lime's potential cardiovascular benefits.

### Does blood lime have anti-cancer properties?

Preliminary research suggests blood lime's limonoids and flavonoids can inhibit pancreatic cancer cell proliferation through apoptotic pathways. Specifically, these compounds upregulate pro-apoptotic proteins Bax, p53, and caspase-3, while downregulating the anti-apoptotic protein Bcl-2, effectively triggering programmed cancer cell death. These findings are based on in vitro studies and should not be interpreted as a cancer treatment or cure. Human clinical trials are needed before definitive health claims can be made.

### How much blood lime should I eat per day?

There is no formally established clinical dosage for blood lime as a supplement. Based on culinary and nutritional guidance, consuming 1–2 blood limes or 1–2 tablespoons of juice per serving is a practical starting point. As a hybrid citrus fruit, it is primarily consumed fresh, as juice, or as pulp. Regular moderate inclusion in the diet is considered safe for most individuals and allows consistent intake of its beneficial flavonoids, vitamin C, and antioxidants.

### Is blood lime good for skin health?

Blood lime supports skin health through two primary mechanisms. Its high vitamin C content is essential for collagen synthesis, which maintains skin elasticity, firmness, and wound healing. The fruit's anthocyanins and carotenoids act as antioxidants that protect skin cells from UV-induced oxidative damage, potentially reducing signs of premature ageing. While topical citrus extracts are widely studied, dietary intake of vitamin C and anthocyanins is also well-established to improve skin integrity and photoprotection over time.

### Can blood lime improve digestion?

Blood lime contains dietary fibre that supports gut motility and promotes healthy digestion. Fibre adds bulk to stool, encourages regular bowel movements, and feeds beneficial gut bacteria, supporting a balanced microbiome. Citrus fibres, including pectin found in lime pulp, have prebiotic properties. Additionally, citrus flavonoids may exert mild anti-inflammatory effects on the gut lining. Including 1–2 blood limes regularly in your diet can be a practical way to contribute to daily fibre intake and support digestive regularity.

### Does blood lime help protect eyesight?

Blood lime's carotenoid and antioxidant content may contribute to vision protection. Carotenoids, particularly lutein and zeaxanthin found in citrus fruits, accumulate in the macula of the eye and filter harmful blue light while reducing oxidative stress on retinal cells. Vitamin C in blood lime also supports the integrity of ocular blood vessels and may reduce the risk of cataracts over time. While specific clinical studies on blood lime and vision are absent, these mechanisms are well-supported by broader research on carotenoid-rich fruits.

### Can blood lime boost immune function?

Blood lime is a meaningful source of vitamin C, a nutrient central to immune defence. Vitamin C stimulates the production and function of white blood cells, including lymphocytes and phagocytes, and acts as an antioxidant that protects immune cells from oxidative damage during infection. Hesperidin and rutin in blood lime also exhibit anti-inflammatory properties that may modulate immune responses. While blood lime alone is not a substitute for medical immune support, regular consumption as part of a balanced diet can contribute to maintaining robust immune function.

### What makes blood lime different from regular limes?

Blood lime is an Australian hybrid containing higher concentrations of anthocyanins and flavonoids compared to regular limes. Its red-pigmented flesh provides additional antioxidant compounds like rutin and neohesperidin at therapeutically relevant levels.

### Is there scientific evidence for blood lime's health benefits?

Current evidence is limited to laboratory studies showing antioxidant activity and cancer cell inhibition. No human clinical trials have been conducted, making therapeutic claims premature despite promising in vitro results.

### Can blood lime help with diabetes complications?

Laboratory studies show blood lime extracts inhibit aldose reductase with IC50 of 47.21 μg/mL, potentially reducing diabetic complications. However, no human studies confirm clinical effectiveness or safe dosing protocols.

### What are the active compounds in blood lime?

Primary bioactive compounds include flavonoids (rutin, hesperidin, neohesperidin, hesperetin) and limonoids (limonexic acid, isolimonexic acid, limonin). These compounds demonstrate radical-scavenging activity and enzyme inhibition in laboratory testing.

## References

Sources: https://pubmed.ncbi.nlm.nih.gov/32051231; https://doi.org/10.1016/j.jfca.2019.02.008; https://www.sciencedirect.com/science/article/pii/S175646461930065X

---

*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
*License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*