Journal
CARBOHYDRATE POLYMERS
Volume 102, Issue -, Pages 376-384Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2013.11.069
Keywords
Premna microphylla turcz leaves (PMTL); Alcohol insoluble solids (AIS); Low-methoxyl pectin; Ammonium oxalate; Morphology
Categories
Funding
- National Natural Science Foundation of China [31260386]
- Research Program of State Key Laboratory of Food Science and Technology, Nanchang University [SKLF-MB-201004]
Ask authors/readers for more resources
Premna microphylla turcz leaves (PMTL) have been used for preparing a green tofu by Chinese for a long history. Chemical composition analysis indicated alcohol insoluble solids (A1S) of PMTL contained high amount of pectin. Water, ammonium oxalate, hydrochloric acid and sodium hydroxide were used to extract different pectic fractions sequentially. Ammonium oxalate was found to be the most effective extracting agent, reflecting on a high yield (20.61%) and a significant change of morphology of AIS. The resulted oxalate-soluble pectin (OXSP) showed high galacturonic acid content (76.15%) and average molecular weight (980.67 kDa), low neutral sugar content (6.41%) and degree of methoxylation (14.90%). All of the characteristics have contributed excellent gelling and thickening properties of OXSP. These results may allow an improved use of PMTL as a resource of low-methoxyl pectin, and observation of the morphology of residues can be helpful for evaluating the efficiency of extracting agents. (C) 2013 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available