The world consumption of pectin is rising to about 55.000 metric tons with annually grows of 6.7% and it’s important for the food and pharmaceutical industries. For industrial production, the prime sources are apple pomace, citrus peels, and sugar beet chips. With increased awareness of obesity, cancer and an aging population, low-calorie foods and low-sugar foods are preferred. This has promoted the use of additional sources of pectin, like sunflower head residue (SHR).<br/>The traditional extraction methods are not suitable for sunflower source due to low density and oil content of these raw materials, thus new approaches are required. SHR pectins were usually are isolated from raw materials by a static method using sodium hexametaphosphate (SHMP) as the quarantine reagent [1]. A gravity flow dynamic method was applied for pectin extraction from sunflower head (SFH) residues. Sodium salts were used as an ion exchange reagent to decoupling the divalent metal ions in sunflower cell wall tissues [2]. In comparison with traditionally static approaches that is popularly used for sunflower pectin extraction, sodium ion in gravity flow mode can make this new extraction procedure simpler, more efficient, and cost-effective. Mathematical modeling of ion exchange was used to provide a scientific knowledge base concerning the mass transport mechanisms, which are involved in the calcium exchange from the plant cell wall in dynamic and static mode. HPAE PAD and HPSEC characterization showed that SFH pectin obtained by the new method had higher galacturonic acid content and higher molecular weight.<br/><br/>

New method for pectin extraction from sunflower head residue

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.