Shella Permatasari Santoso, Shin-Ping Lin, Tan-Ying Wang, Yuwen Ting, Chang-Wei Hsieh, Roch-Chui Yu, Artik Elisa Angkawijaya, Felycia Edi Soetaredjo, Hsien-Yi Hsu, Kuan-Chen Cheng
Toxic compounds in pineapple peel waste hydrolysate (PPWH), namely formic acid, 5-hydroxymethylfurfural (HMF), and furfural, are the major predicament in its utilization as a carbon source for bacterial cellulose (BC) fermentation. A rapid detoxification procedures using atmospheric cold plasma (ACP) technique were employed to reduce the toxic compounds. ACP treatment allows the breakdown of toxic compounds without causing excessive breakdown of sugars. Herein, the performance of two available laboratory ACP reactors for PPWH detoxification was being demonstrated. ACP-reactor-1 (R1) runs on plasma power of 80–200 W with argon (Ar) plasma source, while ACP-reactor-2 (R2) runs at 500–600 W with air plasma source. Treatment in R1, at 200 W for 15 min, results in 74.06%, 51.38%, and 21.81% reduction of furfural, HMF, and formic acid. Treatment in R2 at 600 W gives 45.05%, 32.59%, and 60.41% reductions of furfural, HMF, and formic acid. The BC yield from the fermentation of Komagateibacter xylinus in the R1-treated PPWH, R2-treated PPWH, and untreated-PPWH is 2.82, 3.82, and 2.97 g/L, respectively. The results show that ACP treatment provides a novel detoxified strategy in achieving agricultural waste hydrolysate reuse in fermentation. Furthermore, the results also imply that untreated PPWH can be an inexpensive and sustainable resource for fermentation media supplementation. © 2021 Elsevier B.V.
Chemical Engineering Department, Widya Mandala Surabaya Catholic University, #37, Kalijudan Rd., Surabaya, 60114, East Java, Indonesia; Chemical Engineering Department, National Taiwan University of Science and Technology, #43, Sec. 4, Keelung Rd., Taipei, 10607, Taiwan; School of Food Safety, Taipei Medical University, #250, Wuxing Street, Xinyi Dist., Taipei, 11042, Taiwan; Institute of Food Science and Technology, National Taiwan University, #1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan; Institute of Biotechnology, National Taiwan University, #1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan; Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Rd., South Dist., Taichung, 40227, Taiwan; Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, #43, Sec. 4, Keelung Rd., Taipei, 10607, Taiwan; School of Energy and Environment & Department of Materials Science and Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong; Shenzhen Research Institute of City University of Hong Kong, Shenzhen, 518057, China; Department of Medical Research, China Medical University Hospital, China Medical University, 91, Hsueh-Shih Road, Taichung, 40402, Taiwan; Department of Optometry, Asia University, 500, Lioufeng Rd., Wufeng, Taichung, 41354, Taiwan