Belinda B. Ntow1, Jacob K. Agbenorhevi1*, Fidelis M. Kpodo2, Genevieve Pawar3
, Frank Asante3, Alan M. Smith4 and Gordon A. Morris5
Okra (Abelmoschus esculentus) pectin is a potential new source of natural
polysaccharide with gelling and emulsifying capabilities, which can be
exploited industrially as functional ingredients in food and non-food
products. This study evaluated the potential of okra pectin as a substitute
for lecithin, an allergenic and increasingly costly emulsifier used in milk
chocolate production. Milk chocolate samples were formulated with 0.2% okra
pectin, with 0.2% lecithin serving as the positive control. Rheological
profiling (at 35 °C and 60 °C), texture analysis, and consumer sensory
evaluation were conducted to determine the impact of incorporating okra
pectin. All formulations exhibited shear-thinning flow behaviour however,
chocolates containing okra pectin showed significantly higher viscosity
values across measured shear rates compared with lecithin based controls.
Texture profile analysis revealed significant differences in gumminess and
cohesiveness, while hardness, springiness, and other parameters remained
comparable. Sensory difference testing indicated that consumers detected
only minor attribute variations and overall acceptability did not differ
significantly between samples. The results demonstrate that okra pectin can
function effectively as a chocolate emulsifier, producing milk chocolate
with rheological, textural and sensory characteristics comparable to those
obtained with lecithin. These findings highlight okra pectin as a promising
plant based hydrocolloid for chocolate manufacturing, acceptable to
consumers, offering both functional and allergen avoidance advantages.