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Radish-brown spots of fungal contamination was detected on dried hardwood pulp sheets during storage at a paper manufacturing company in Korea. Therefore, this study was conducted to identify and characterize the fungal contaminant responsible for the discoloration observed in the stored hardwood pulp sheets. A new thermophilic cleistothecial fungal isolate recovered from these affected regions was identified as Thermoascus crustaceus by sequencing of the partial D1–D2 region of the long rRNA gene, which exhibited 100% identity with the reference strains JF922031.1, FJ358289.1, and EU021597.1. Morphological analyses by light microscopy revealed prolific conidial clusters and extensive hyphal networks colonizing the discolored hardwood pulp surfaces. The isolate demonstrated optimal growth at 50°C, consistent with adaptation to the high processing temperatures used during papermaking. This study reports the first documented isolation of T. crustaceus related to fungal contamination and discoloration in hardwood pulp sheets from Korea and emphasizes the ecological and industrial significance of thermophilic Ascomycota in high-temperature manufacturing environments.

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Recent trends in life cycle assessment studies on pulp- and paper-based materials Seokmin Hong, Junhyeok Park, Semin Kang, Kyudeok Oh, Soojin Kwon p. 5-24
퇴행성뇌질환 치료를 위한 셀룰로오스 기반 약물전달시스템의 응용과 설계전략 = Applications and design strategies of cellulose-based drug delivery systems for the treatment of neurodegenerative diseases 우한웅, 서진호, 김지은 p. 25-40
Optimization of bacterial nanocellulose production from sweet potato waste via response surface methodology Lili Melani, Grace Brigitta Gunawan, Reso Aji Saputra Wicaksono, Gilang Mahendra Pratama p. 41-55
Preparation and characterization of methyl cellulose/pullulan/montmorillonite nanocomposite film for packaging applications Jungeon Lee, Jae Hoon Jung, Sabina Yeasmin, Neul-Sae-Rom Kim, Seong Baek Yang, Dong-Jun Kwon, Jung Wan Kim, Jeong Hyun Yeum p. 56-65
Study on the valorization of oak bark biomass. 1, Extraction and characterization of tannins Sa Rang Choi, Jung Myoung Lee p. 66-74
Study on the valorization of oak bark biomass. 2, Organosolv pulping of bark residue after tannin extraction Sa Rang Choi, Jung Myoung Lee p. 75-84
Effect of lignin recovery conditions from hardwood kraft black liquor on lignin characteristics Sa Rang Choi, Eon Jin Park, Jung Myoung Lee p. 85-93
(The) first record of cleistothecial Thermoascus crustaceus isolated from dried hardwood pulp in Korea Sunirmal Sheet, Marma Mamaching, Yang Soo Lee p. 94-102
오픈 헤드박스형 파일럿 초지기의 섬유 배향 분석 = Analysis of fiber orientation of paper using pilot machine with open headbox. 3, Effect of stock concentration and feeding speed. 3, 지료 농도 및 사출 속도에 따른 영향 최경화, 이광섭, 류정용 p. 103-110
AKD 및 PAE 복합화를 통한 나노셀룰로오스 기반 코팅지의 차단성 향상 = Enhancement of barrier properties of nanocellulose-based coated paper via AKD and PAE incorporation 채소영, 이학명, 김혜인, 박승욱, 유성민, 이건희, 윤혜정 p. 111-120
버섯 폐배지를 활용한 복합시트의 강도 및 표면 특성 향상 = Enhancement of mechanical and surface properties of composite sheets prepared using spent mushroom substrate 한승민, 최윤혁, 임완희, 정재훈, 전초현, 오지연, 이상수 p. 121-129

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