Processes involving selective precipitation for the recovery of purified pectins from mango peel
| Autor: | Sybille Neidhart, Andreas Nagel, Reinhold Carle, Hans-Ulrich Endress, Christine Rentschler, Carina Winkler |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Exudate
animal structures food.ingredient Chromatography Polymers and Plastics Pectin Precipitation (chemistry) Chemistry digestive oral and skin physiology Organic Chemistry food and beverages macromolecular substances 04 agricultural and veterinary sciences complex mixtures 040401 food science 0404 agricultural biotechnology food Volume (thermodynamics) Arabinogalactan Yield (chemistry) Materials Chemistry medicine Composition (visual arts) medicine.symptom Effluent |
| Zdroj: | Carbohydrate Polymers. 174:1144-1155 |
| ISSN: | 0144-8617 |
| Popis: | Three methods for the recovery of purified pectins from directly dried mango peel were developed, using selective precipitation of mango pectin in propan-2-ol (IPA) of adequate volume concentrations for purification. Yields, composition, macromolecular and gelling properties of the resultant pectins were compared. Effluent analyses proved postextractive removal of fruit exudate arabinogalactans. The recovery processes involved ( A ) washing of raw-pectin powder in IPA of defined volume concentration, ( B ) fractional alcoholic precipitation of dissolved raw pectin, or ( C ) selective pectin precipitation from the hot-acid extract of mango peel in adequately diluted IPA. High galacturonic acid contents (≥ 721 g/kg) and intrinsic viscosities (≥ 320 mL/g) enabled ∼2.2-fold gelling capacities compared to raw mango pectin, which resulted from the standard procedure mimicking industrial pectin recovery from established sources. Removal of the predominant impurities (coextractable exudate arabinogalactans, ash) diminished the yields to ∼49% of the raw-pectin yield. Technical feasibility of the proposed procedures was discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect