Revolutionising Fibre: Australian Scientists Push for New Classification to Unlock Health Benefits
Australian food scientists are on the cusp of a major overhaul in how we understand dietary fibre, moving beyond the simplistic soluble and insoluble categories to a more nuanced system that could unlock specific health benefits and drive innovation in functional foods. This paradigm shift is particularly timely for Queensland-based Health Food Symmetry (HFS), which has developed a unique sugarcane-derived prebiotic that is already setting a benchmark in the evolving scientific landscape.
Professor Raj Eri, a leading food scientist at RMIT University, highlights the critical role of dietary fibres found in fruits, vegetables, beans, and whole grains. However, he points out a significant gap in current knowledge: the lack of clear guidance on how to leverage different types of fibres for targeted health outcomes. This ambiguity affects consumers, dieticians, clinicians, and food technologists alike, turning the selection of beneficial fibres into a “vague guessing game.”
“The binary classification of soluble and insoluble is insufficient to capture the diverse structures and complex mechanisms through which dietary fibres influence human physiology,” Professor Eri explains. The proposed new classification aims to provide a more precise framework, assuring stakeholders that they can achieve desired health effects with greater certainty.
A New Framework for Fibre: Boosting Innovation
The advancements in fibre classification are poised to significantly benefit Health Food Symmetry (HFS). The company has pioneered PhytoBiome, a proprietary prebiotic fibre derived from virgin sugarcane. This innovative ingredient is produced through a specialised extraction process that meticulously preserves the plant’s natural cell wall structure and its inherent bioactive compounds.
Professor Eri’s research into PhytoBiome has yielded compelling results. He notes that “one serve of the virgin sugarcane prebiotic can deliver fibre functionality equivalent to one to two serves of vegetables – not just in quantity, but in the quality of gut response and microbiome stimulation.” This remarkable efficacy stems from the ingredient’s balanced composition of fermentable and bulking fibres within its natural sugarcane matrix. This balance effectively supports colonic transit and promotes the production of short-chain fatty acids (SCFAs), thereby mimicking the physiological benefits of a diet rich in vegetables. Consequently, virgin sugarcane prebiotics are emerging as a crucial reference ingredient in new fibre classification models, demonstrating consistent performance in SCFA production, microbiome diversity, and fermentation behaviour.
Enhancing Everyday Foods: The Potential of Sugarcane Fibre
The unique properties of virgin sugarcane fibre, such as PhytoBiome, offer exciting possibilities for improving common food and beverage products. Professor Eri suggests that its slow-fermenting, insoluble fibre characteristics could be instrumental in addressing the low-fibre content often found in liquid breakfast options. By incorporating this fibre, manufacturers can enhance the gut microbiome benefits of these convenient meals.
A particularly promising synergy exists between sugarcane fibre and milk proteins like casein. This combination creates a unique prebiotic effect, nourishing both saccharolytic and proteolytic bacteria in the gut. Crucially, this occurs without leading to excessive gas production, offering a more comfortable and beneficial gut health experience. Professor Eri’s research indicates that these complex fibres, with their preserved structure and fermentability, are exceptionally well-suited for targeted gut nutrition, especially in liquid formulations.
He further elaborates that many current liquid breakfast products rely on simpler fibres or isolated compounds that lack the structural complexity necessary for genuine gut function. The new classification research underscores the importance of incorporating more physiologically active fibres, like those from virgin sugarcane, to effectively bridge the gap between convenience and tangible health advantages.
Beyond beverages, the formulation versatility of virgin sugarcane prebiotics is a significant advantage. Their distinct particle structure allows for seamless integration into dry blends, beverages, and bakery applications without negatively impacting processing stability. This adaptability aligns perfectly with the growing demand from health-conscious brands seeking ingredients that enhance microbiome diversity and SCFA production.
Rigorous Research and Future Directions
Professor Eri is currently preparing a series of publications that will detail his comparative analysis of various dietary fibres, evaluated against the new reclassification framework. These studies will provide critical insights into how PhytoBiome performs in comparison to other leading fibres, including those that have been historically used or are ultra-processed, and which may sometimes yield undesirable effects.
In parallel, Professor Eri has played a pivotal role in a substantial $13 million Australian Research Council (ARC) grant application. The goal is to establish an Industrial Transformation Training Centre (ITTC) focused on “Manufacturing value-added food ingredients through AI-enabled solutions.” This ambitious program will involve a consortium of Australian universities and industry partners, with HFS invited to contribute, placing a strong emphasis on functional fibres.
Professor Eri’s extensive in vitro and clinical research consistently reveals that not all fibres are created equal when it comes to supporting microbiome activity and metabolic output. He asserts that the validation of any new fibre classification system hinges on the performance of high-quality reference fibres, such as virgin sugarcane prebiotics. These ingredients are instrumental in defining what constitutes a truly beneficial and health-promoting fibre.
The Growing Demand for Gut Health Solutions
There is a palpable and increasing clinical interest in fibres that offer more than just a place on an ingredient list. The focus is now on fibres that actively support microbial recovery, particularly following health challenges. Virgin sugarcane prebiotics are consistently demonstrating their ability to foster microbiome diversity and enhance metabolic resilience, positioning them favourably within the rapidly evolving field of fibre-based medical nutrition.
A significant hurdle in digestive health management has been the identification of fibres that are both well-tolerated and functionally potent. Professor Eri suggests that virgin sugarcane prebiotics are emerging as a strong contender for individuals with sensitive digestive systems. Initial research indicates they are low in FODMAPs while still effectively supporting fermentation and butyrate production.
The incorporation of complex, slowly fermenting fibres, such as those found in virgin sugarcane, holds promise for modulating satiety hormones and moderating glycaemic responses. This opens up exciting potential applications in formulations designed for weight management and metabolic health.
HFS is currently undertaking a $2 million funding round in anticipation of a planned public listing.
