A beverage needs both flavour and a stable appearance
Akebia trifoliata has potential as a beverage ingredient, but its pulp presents two connected development problems: balancing an unfamiliar flavour and preventing an unattractive separation of solids. An August study approached those problems together, testing pulp, sugar and citric acid before screening stabilisers. The highest-scoring basic formulation contained 14% pulp, 8% sucrose and 0.05% citric acid.
The fruit was the Qinbao 1 variety, harvested in Shaanxi, China, in September 2023 and held frozen before processing. Publication in 2026 therefore reports a recent paper, not a newly harvested 2026 crop. The researchers independently prepared each treatment three times and used a trained panel to compare the resulting drinks under controlled conditions.
Acidity was the strongest formulation variable
Among the variables examined, citric acid had the greatest influence on the composite sensory score. The selected recipe was the best-performing combination within the tested design, rather than a universal optimum for every Akebia variety or consumer group. Ingredient percentages were expressed relative to the final juice formulation on a mass-per-volume basis.
Twenty trained panellists assessed colour, aroma, taste and appearance. A predefined weighting scheme gave taste 40% of the formulation score and each other attribute 20%. The researchers converted the panel’s ratings into a composite score using a fuzzy mathematical evaluation method. This made the comparison structured, but the chosen weights remained methodological decisions that could influence which formulation ranked highest.
More stabilisation was not always better
The team screened pectin, guar gum, xanthan gum, sodium alginate and sodium carboxymethyl cellulose. Pectin produced the strongest individual suspension-stability result, although excessive viscosity reduced sensory acceptance. A combined system of 0.03% pectin, 0.05% guar gum and 0.06% xanthan gum achieved the best balance between the stability coefficient and trained-panel score among the combinations tested.
Stability was assessed over three days at room temperature and through a centrifugation-based comparison of absorbance before and after treatment. The coefficient measured how much apparent turbidity remained after centrifugation. It was a practical screening index for the formulations, not a direct measurement of commercial shelf life, and it cannot establish how the drink would behave over months in a retail package.
The next development stage is broader validation
The authors explicitly leave long-term storage, microbial safety, rheology and consumer acceptance unresolved. Although the preparation included heat treatment, the study does not supply the validation needed to treat that process as a commercial safety specification. It also did not measure phenolic content, antioxidant activity or retention of bioactive compounds in the finished beverage.
The practical contribution is a sequence for formulation work: adjust the sugar–acid balance, manage pulp particles, then select hydrocolloids without sacrificing mouthfeel. Commercial development would need to test that balance across production batches, temperatures, light exposure and packaging conditions, followed by a larger consumer study. The promising recipe is a starting point for those tests, with its three-day stability window clearly separated from a market-ready shelf-life claim.
- Optimization of Sensory Quality and Short-Term Colloidal Stability of <i>Akebia trifoliata</i> Cloudy Juice for Beverage Development. ↗
Multidisciplinary Digital Publishing Institute (MDPI) · CC-BY-4.0 ↗. Wen H, Li Y, Sani MNH, Yong JWH, Song J. Optimization of Sensory Quality and Short-Term Colloidal Stability of <i>Akebia trifoliata</i> Cloudy Juice for Beverage Development. Foods (Basel, Switzerland). 2026. DOI: 10.3390/foods15162911. © 2026 by the authors. Adapted by FoodRadar.