Carpobrotus edulis

Carpobrotus edulis, commonly known as the ice plant, has a long history of use by coastal peoples of southern Africa and the Mediterranean. Among the Xhosa of the Eastern Cape, the sweet, juicy fruit is ground into a pulp and brewed as a mild tea to soothe stomach upset and relieve mild diarrhea (Bennett et al., 2021). The Khoi of the Western Cape traditionally apply a poultice of crushed leaves to burns and skin abrasions, claiming it speeds healing and reduces inflammation (Bennett et al., 2021). In coastal communities of the Mediterranean, the fruit is also used as a natural sweetener in teas and as a decoction to treat mild gastrointestinal discomfort (Bennett et al., 2021). In all cases, the plant part used is the fruit pulp for infusions and the leaves for topical poultices.

A simple, safe recipe for a fruit‑pulp tea is as follows: take 10 g of fresh, ripe fruit pulp, place it in a small saucepan, and add 200 ml of boiling water. Let the mixture steep for 5–10 minutes, then strain and sip slowly. This tea can be consumed up to three times a day. Pregnant women should avoid large quantities because the fruit contains natural laxatives that may stimulate uterine contractions. As with any herbal preparation, individuals with known allergies to cactus family plants should exercise caution.

The therapeutic effects of Carpobrotus edulis are largely attributed to its rich phytochemical profile. The fruit pulp is high in vitamin C, which supports immune function, and contains flavonoids such as quercetin and kaempferol that possess anti‑inflammatory and antioxidant properties. Phenolic acids, including gallic acid, contribute to the plant’s soothing action on the digestive tract. The leaves contain mucilaginous polysaccharides that form a protective film over skin lesions, aiding in wound healing and reducing bacterial invasion.

Modern research continues to explore the antioxidant capacity of Carpobrotus edulis extracts, and the fruit is now marketed in some regions as a natural sweetener in health food stores. While commercial products are available, many coastal communities still rely on the plant for everyday remedies, underscoring its enduring relevance in traditional medicine.

Common products:
Edible fruit of Carpobrotus edulis is consumed fresh or processed into jams, jellies, and syrups/syrup bases. Flowers are used as a natural flavoring in syrups and preserves.

Food and beverages (non-medicinal):
Fruit is harvested from wild stands; high acidity and moderate sugar content give characteristic sour flavor. Fruit may be pressed to produce juice or syrup, or cooked with sugar to make jams and jellies. Flowers are used as flavoring in syrups and conserves.

Properties relevant to use:
Fruit pulp contains elevated free acidity (principally malic acid) contributing sourness; pulp texture becomes softer and mucilaginous when ripe, facilitating jam or syrup preparation. Flowers possess mild fragrance and pigment extraction properties in syrups. These physical–chemical attributes enable standard confectionery processing without fermentation or enzyme additives.

Sustainability and sourcing:
Fruit is collected from naturalized and cultivated stands, commonly as a wild-harvested coastal product. Fruit picking is seasonal (late spring–summer). Concerns exist regarding harvesting pressure in localized populations and the plant’s invasive status; sustainable practice includes avoiding overharvesting and maintaining a balance with native flora.

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