While Pentadin and Thaumatin are both sweet-tasting proteins, they come from different sources. Pentadin is extracted from the Oubli fruit, while Thaumatin is obtained from the Katemfe fruit (Thaumatococcus daniellii) found in West Africa. Both proteins are considered to have a much higher sweetness intensity compared to regular sugar, making them candidates for alternative sweeteners, specifically in low-calorie and sugar-free products.