Jeffrey M. Catchmark

Dr. Jeffrey M. Catchmark


Research Focus & Metrics

Academic Career Length

23Years (2004-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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24 May 2020 in Cellulose
Verified
Journal Article
Closed access
PDF file
WYWenqing Yao
Wenqing Yao
YWYuanyuan Weng
Yuanyuan Weng
JCJeffrey M. Catchmark
Jeffrey M. Catchmark


24 July 2009 in Journal of Biological Engineering
Verified
Journal Article
Open access
PDF file
KCKuanChen Cheng
KuanChen Cheng
JCJeffrey M. Catchmark
Jeffrey M. Catchmark
Ali DemirciAli Demirci
Ali Demirci
Bacterial cellulose has been used in the food industry for applications such as low-calorie desserts, salads, and fabricated foods. It has also been used in the paper manufacturing industry to enhance paper strength, the electronics industry in acoustic diaphragms for audio speakers, the pharmaceutical industry as filtration membranes, and in the medical field as wound dressing and artificial skin material. In this study, different types of plastic composite support (PCS) were implemented separately within a fermentation medium in order to enhance bacterial cellulose (BC) production by Acetobacter xylinum. The optimal composition of nutritious compounds in PCS was chosen based on the amount of BC produced. The selected PCS was implemented within a bioreactor to examine the effects on BC production in a batch fermentation. The produced BC was analyzed using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), thermogravimetric analysis (TGA), and dynamic mechanical analysis (DMA). Among thirteen types of PCS, the type SFYR+ was selected as solid support for BC production by A. xylinum in a batch biofilm reactor due to its high nitrogen content, moderate nitrogen leaching rate, and sufficient biomass attached on PCS. The PCS biofilm reactor yielded BC production (7.05 g/L) that was 2.5-fold greater than the control (2.82 g/L). The XRD results indicated that the PCS-grown BC exhibited higher crystallinity (93%) and similar crystal size (5.2 nm) to the control. FESEM results showed the attachment of A. xylinum on PCS, producing an interweaving BC product. TGA results demonstrated that PCS-grown BC had about 95% water retention ability, which was lower than BC produced within suspended-cell reactor. PCS-grown BC also exhibited higher T max compared to the control. Finally, DMA results showed that BC from the PCS biofilm reactor increased its mechanical property values, i.e., stress at break and Young's modulus when compared to the control BC. The results clearly demonstrated that implementation of PCS within agitated fermentation enhanced BC production and improved its mechanical properties and thermal stability.

1 June 2016 in Carbohydrate Polymers
Verified
Journal Article
Closed access
MDManmeet Singh Dayal
Manmeet Singh Dayal
JCJeffrey M. Catchmark
Jeffrey M. Catchmark

28 December 2004 in Small
Verified
Journal Article
Closed access
PDF file
JCJeffrey M. Catchmark
Jeffrey M. Catchmark
SSShyamala Subramanian
Shyamala Subramanian
ASAyusman Sen
Ayusman Sen

1 January 2021 in Carbohydrate Polymers
Verified
Journal Article
Closed access
STShuo Tang
Shuo Tang
KCKai Chi
Kai Chi
HXHui Xu
Hui Xu
QYQiang Yong
Qiang Yong
JYJian Yang
Jian Yang
JCJeffrey M. Catchmark
Jeffrey M. Catchmark