Stearic acid esterified pectin: Preparation, characterization, and application in edible hydrophobic pectin/chitosan composite films.

International Journal of Biological Macromolecules
Pengkai WangPengzhi Hong

Abstract

This work investigated the modification of low-methoxy pectin with stearic anhydride through microwave action with 4-dimethylaminopyridine as catalyst. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses indicated that stearic acid was grafted on the pectin through esterification reaction, with the maximum stearic acid grafting ratio (SGR) of 10.7% for the modified pectin. The introduction of stearic acid was shown to significantly improve the emulsifying activity and stability of pectin. Composite films were prepared by blending the modified pectins and chitosan, and compared with the contact angle of 65.3° for the film with native low-methoxy pectin (PC0), the films with modified pectins showed a significant angle increase, with the highest contact angle reaching 101.9°, indicating a hydrophobic surface. Moreover, an appropriate amount of aliphatic chains could improve the tensile strength and elongation at break of the composite films due to the "anchoring effect".

References

Mar 24, 2004·Toxicology·John L ButenhoffRaymond G York
May 20, 2008·Current Opinion in Plant Biology·Debra Mohnen
Oct 20, 2012·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Enrica CalceStefania De Luca
Apr 23, 2014·International Journal of Biological Macromolecules·Enrica CalceStefania De Luca
May 7, 2014·Critical Reviews in Food Science and Nutrition·Jun ChenShun-Jing Luo
Jun 1, 2016·Enzyme and Microbial Technology·Nadine KarakiJordane Jasniewski
Jan 10, 2017·International Journal of Biological Macromolecules·Asma ChetouaniDidier Le Cerf
Feb 13, 2017·Carbohydrate Polymers·Siew Yin ChanXian Jun Loh
Mar 20, 2019·International Journal of Biological Macromolecules·Heba G R Younis, Guohua Zhao
Apr 15, 2019·Carbohydrate Polymers·Hao-Xiang GaoWei-Cai Zeng
Mar 17, 2020·International Journal of Biological Macromolecules·Walid YeddesMoufida Saidani Tounsi
Apr 28, 2020·International Journal of Biological Macromolecules·A S SoubhagyaM Prabaharan
May 18, 2020·International Journal of Biological Macromolecules·Heba G R YounisGuohua Zhao
Feb 18, 2021·Carbohydrate Polymers·Sara TorkamanSeyed Heydar Mahmoudi Najafi
Mar 7, 2021·Carbohydrate Polymers·Shabbah BegumAbu Bakar Sulong

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.