Integrated Processing of Sugar Beet Pulp: Pectin and Microcrystalline Cellulose Production and Their Properties
S T Minzanova1, Y V Chekunkov1, A V Khabibullina1
1Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia.
Biopolymers
|July 10, 2026
Summary
Sugar beet pulp waste was chemically processed to yield valuable pectin and microcrystalline cellulose. These biocompatible biopolymers show high thermal stability and are suitable for food, pharmaceutical, and cosmetic applications.
Area of Science:
- Biopolymer Chemistry
- Materials Science
- Waste Valorization
Background:
- Sugar beet pulp is a significant industrial waste stream.
- Valorization of pulp can create valuable biomaterials.
- Sustainable sourcing of biopolymers is crucial.
Purpose of the Study:
- To extract and characterize pectin and microcrystalline cellulose from sugar beet pulp.
- To evaluate the physicochemical properties and thermal stability of the extracted biopolymers.
- To assess the potential applications of these biopolymers in various industries.
Main Methods:
- Sequential chemical processing: acid extraction for pectin, alkali treatment, bleaching, and hydrolysis for cellulose.
- Characterization techniques: Infrared spectroscopy (IR), X-ray diffraction (XRD), Atomic Force Microscopy (AFM), Thermogravimetric Analysis (TGA).
- Physicochemical analysis: molecular weight, degree of esterification, crystallinity index, thermal degradation temperature.
Main Results:
- Pectin: 14.5% yield (ADW), high molecular weight (39.25 kDa), high degree of esterification (75.0%), thermal degradation at 257.4°C.
- Microcrystalline Cellulose: 34.5% yield (ADW), high crystallinity index (86.4%), thermal degradation at 344.4°C.
- Both biopolymers demonstrated good thermal stability and biocompatibility.
Conclusions:
- Sugar beet pulp can be efficiently converted into high-value pectin and microcrystalline cellulose.
- The extracted biopolymers possess desirable properties for industrial applications.
- This process offers a sustainable route for waste valorization in the food, pharmaceutical, and cosmetic sectors.
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