GAC – Characteristics and Uses of the Gourd Family Fruit

The fruit of *Momordica cochinchinensis*, commonly referred to as GAC, exhibits a complex internal structure comprising the following distinct components: a centrally positioned seed of intense black pigmentation, enveloped by a succulent, lipid-rich aril in a deep crimson hue; the intermediate layer of the pericarp, or mesocarp, characterized by a spongy, porous texture and a vibrant orange coloration; and the outer epidermal layer (exocarp), which presents a rough, uneven surface with a color gradient ranging from deep orange to red, marked by prominent tuberculate protuberances.

The fruit of *Momordica cochinchinensis*, commonly referred to as GAC, is distinguished by its exceptionally high concentration of bioactive compounds, among which beta-carotene and lycopene—both carotenoid pigments—play a predominant role in conferring its vivid coloration. These compounds exhibit robust antioxidant capacity, with lycopene demonstrating a particularly high efficacy in scavenging reactive oxygen species, whose excessive accumulation may lead to oxidative damage to cellular components, including genetic material. While free radicals represent a natural byproduct of metabolic processes, their unchecked activity can initiate a cascade of deleterious reactions that contribute to the pathogenesis of various diseases, including malignancies. Notably, although numerous fruits and vegetables contain substantial amounts of beta-carotene, few can rival GAC in terms of lycopene content—comparative studies indicate that the edible portion of its seed aril contains up to tenfold higher concentrations than conventional sources such as tomatoes or watermelons. Beyond its protective role against oxidative stress, lycopene also modulates apoptotic pathways, which may be particularly relevant in the context of eliminating cells with dysregulated division cycles, such as cancerous cells. Furthermore, the seed aril of GAC serves as a rich source of unsaturated fatty acids, including oleic acid (omega-9) and linolenic acid (omega-3), whose regular consumption has been associated with favorable effects on lipid profiles, primarily through the reduction of atherogenic low-density lipoprotein (LDL) cholesterol levels.

Scientific evidence indicates that the fruit *Momordica cochinchinensis*, commonly referred to as GAC, serves as a rich source of beta-carotene—a provitamin A compound—making it a promising candidate for supplementation in cases of vitamin A deficiency. Clinical research conducted by Voung et al. demonstrated a statistically significant increase in plasma concentrations of this compound among children with vitamin A insufficiency following consistent consumption of the traditional dish *Xoi Gac*. Furthermore, owing to its high carotenoid content and potentially other bioactive constituents, GAC extract exhibits notable antiproliferative properties, as corroborated by *in vitro* studies on the MCF-7 cell line (breast cancer), where apoptotic induction was observed. Additional scientific findings suggest the efficacy of *Momordica cochinchinensis* seed extract in the treatment of gastric ulcers in animal models (rats), though this mechanism requires further validation in the context of human etiology—primarily *Helicobacter pylori* infections. It is critical to emphasize, however, that the valuable compounds present in both the pulp and the seed aril of the fruit are highly susceptible to degradation when exposed to environmental stressors such as ultraviolet radiation, oxidation, or thermal processing. Commercially available GAC-derived products include freeze-dried powder, frozen pulp, and cold-pressed oil, with the latter two formats demonstrating the highest retention of bioactive components—provided that stringent storage protocols are adhered to.