Inhibition effect of Aspergillus niger and quality preservation of apple by in-package sterilization medium flow of circulating

2022 ◽  
Vol 293 ◽  
pp. 110708
Author(s):  
Yanli Zheng ◽  
Xiaoyu Jia ◽  
Yalin Ran ◽  
Meijun Du ◽  
Zhiyong Zhao ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Inhibition Effect ◽  
Medium Flow

scholarly journals Inhibition of Aspergillus niger DMF 0801 by monoacylglycerols prepared from coconut oil

2011 ◽  
Vol 20 (No. 2) ◽  
pp. 48-52 ◽  
Author(s):  
Z. Řiháková ◽  
V. Filip ◽  
M. PlockovÁ ◽  
J. Šmidrkal ◽  
R. Červenková
Keyword(s):  
Antifungal Activity ◽  
Aspergillus Niger ◽  
Growth Inhibition ◽  
Lauric Acid ◽  
Spore Germination ◽  
Radial Growth ◽  
Coconut Oil ◽  
Germination Inhibition ◽  
Inhibition Effect ◽  
Antifungal Properties

The objectives of the present study were to test the antifungal properties (inhibition of radial growth, inhibition of the mould spore germination) of lauroylglycerol and mixtures of monoacylglycerols synthesised from coconut oil (MIX-I and MIX-II) against Aspergillus niger DMF 0801. The content of monoacylglycerols in lauroylglycerol, MIX-I and MIX-II was 99.9% (w/w), 97.7% (w/w) and 75,1% (w/w), respectively. The content of 1-lauroylglycerol in MIX-I and MIX-II was calculated from the content of lauric acid and content of monoacylglycerols. The inhibition of the radial growth of Aspergillus niger DMF 0801 by lauroylglycerol was stronger than that caused by MIX-I and MIX-II. The inhibition effect of spore germination caused by lauroylglycerol and MIX-I was nearly the same. The inhibition of spore germination increased with increasing content of monoacylglycerol and also with increasing 1-lauroylglycerol content in monoacylglycerols. The level of spore germination inhibition was related to the purity of tested substances. The results of this study indicate that monoacylglycerols made from coconut oil have antifungal activity.  

Synergistic inhibition effect of citral and eugenol against Aspergillus niger and their application in bread preservation

2020 ◽  
Vol 310 ◽  
pp. 125974 ◽  
Author(s):  
Jian Ju ◽  
Yunfei Xie ◽  
Hang Yu ◽  
Yahui Guo ◽  
Yuliang Cheng ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Inhibition Effect ◽  
Synergistic Inhibition ◽  
Synergistic Inhibition Effect

scholarly journals Influence Of Fine-Grained Montmorillonite On Microfungal Pellets Growth In Aqueous Suspensions

2015 ◽  
Vol 14 (1) ◽  
pp. 38-44
Author(s):  
Karol Jesenák ◽  
Alexandra Šimonovičová ◽  
Slavomír Čerňanský
Keyword(s):  
Aspergillus Niger ◽  
Clay Mineral ◽  
Microscopic Analysis ◽  
Significant Inhibition ◽  
Final Size ◽  
Microscopic Fungus ◽  
Simultaneous Application ◽  
Inhibition Effect ◽  
Fine Grained ◽  
Mineral Particles

Abstract The paper presents an inhibition effect of clay mineral – montmorillonite – on the growth of microscopic filamentous fungus Aspergillus niger in the aqueous solution. The significant reduction in growth of the final size of spherical fungal pellets as well as total amount of produced microbial biomass was found out. Within the observed range of additions of clay mineral of 1, 5, 10, 15 and 20 g in the total volume of the 80 ml suspension, this size was in indirect relation to the weight of montmorillonite. However, the most significant inhibition effect was observed at the lowest concentration of the sorbent (1 g). Microscopic analysis of pellets referred to the presence of mineral particles in their pore structure and the distribution of particles in the spatial structure of fungal hyphae was variable. The experiment clearly demonstrated an inhibition effect of montmorillonite. This inhibition could be answered by the experiments focused on the detection of the influence of size and shape of inorganic sorption particles together with the influence of the physicochemical properties of its surface. It could be stated that the simultaneous application of the microscopic fungus Aspergillus niger and the clay mineral montmorillonite for decontamination of waste waters should be disadvantage due to their interaction if compared with the decontamination based on bioaccumulation and sorption separately.

Corrosion Behavior of Aspergillus niger on 7075 Aluminum Alloy and the Inhibition Effect of Zinc Pyrithione Biocide

2019 ◽  
Vol 166 (8) ◽  
pp. G39-G46 ◽  
Author(s):  
Junlei Wang ◽  
Chenjing Li ◽  
Xinxin Zhang ◽  
Muhammad Asif ◽  
Tiansui Zhang ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Aspergillus Niger ◽  
Corrosion Behavior ◽  
7075 Aluminum Alloy ◽  
Zinc Pyrithione ◽  
Inhibition Effect

Fermentative production of glucose oxidase from Aspergillus niger NCIM 545

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
RD Valte ◽  
SS Sakat ◽  
AR Juvekar
Keyword(s):  
Aspergillus Niger ◽  
Glucose Oxidase ◽  
Fermentative Production

Fungus ball paranasal sinuses: pattern of histopathology and culture characteristics

2019 ◽  
Vol 49 (20) ◽  
Author(s):  
Nugroho Suharsono
Keyword(s):  
Aspergillus Niger ◽  
Paranasal Sinus ◽  
Paranasal Sinuses ◽  
Histopathological Examination ◽  
Morphological Characteristics ◽  
Sinus Surgery ◽  
Nasal Discharge ◽  
Fungus Ball ◽  
Methenamine Silver ◽  
Fungus Balls

Background: Fungal infection of the nose and paranasal sinuses is an uncommon condition which is now being increasingly recognized. The clinical presentation is not specific with various symptoms such as nasal obstruction, purulent nasal discharge, facial pain, and chronic cough. Only unilaterality may alert the clinician. Purpose: To find the morphological characteristics of the fungus in patients with paranasal sinus fungus ball. Methods: A retrospective study of 13 paranasal sinus fungus balls cases which underwent endoscopic sinus surgery at Department of Otorhinolaryngology Head and Neck Surgery St. Vincentius A Paulo Hospital Surabaya from March, 2012 until December, 2013. Age, sex, histopathology and fungal cultur were analysed. Histopathologic sections of all the patients were stained with hematoxylin and eosin (H&E), and Gomori methenamine silver (GMS). The specimens were then cultured on Sabouraud dextrose agar plates and incubated at 30°C for 1 month. At the end of the incubation period, the samples were evaluated microscopically to detect fungi and identify their species. Results: The age reported of the 13 patients, was ranging from 36 to 63 years old. There was a significant female predominance, 10 female patients (76.92%) and 3 male patients (23.08%). Histopathological examination showed that most causative agents were Aspergillus species 92.31% (12/13). Culture test was positive for 69.23% (9/13). Aspergillus niger (61.54%, 8/13) is the most frequent fungus reported to cause fungus balls. Conclusion: Pattern of histopathologic on HE and GMS is very helpful and sensitive to identify fungi. The most common isolated mould in our study was Aspergillus niger.Keywords: fungus ball, histopathology and culture, Aspergillus nigerABSTRAK Latar Belakang: Infeksi jamur di hidung dan sinus paranasal merupakan kondisi yang jarang terjadi, namun kini lebih sering ditemukan. Gejala klinisnya tidak spesifik dapat berupa obstruksi hidung, sekret dari hidung, nyeri wajah, dan batuk kronis. Bila terjadi unilateral, patut diwaspadai oleh para klinisi. Tujuan: Untuk mengetahui karakteristik morfologi fungus yang didapati pada pasien sinusitis jamur yang kami teliti. Metode: Dilakukan penelitian retrospektif pada 13 pasien sinusitis jamur yang menjalani bedah sinus endoskopi di Departemen Otorinolaringologi-Kepala Leher Rumah Sakit St. Vincentius A Paulo Surabaya dari bulan Maret 2012 sampai dengan Desember 2013. Dilakukan analisis usia, jenis kelamin, histopatologi dan kultur jamur. Pewarnaan preparat histopatologi menggunakan Hematoxylin dan eosin (H&E) dan Gomori Methenamine Silver (GMS). Kemudian spesimen diletakkan pada piring agar Sabouraud dextrose, dan dilakukan inkubasi pada suhu 30°C selama satu bulan. Pada akhir masa inkubasi, sampel dievaluasi dengan mikroskop untuk mendeteksi jamur dan spesiesnya. Hasil: Didapati usia 13 penderita berkisar dari 36-63 tahun. Wanita lebih dominan sebanyak 10 penderita (76,92 %) dan 3 penderita laki-laki (23,08%). Hasil pemeriksaan histopatologi menunjukkan spesies Aspergillus sebagai penyebab utama (92,31%) pada 12 penderita (12/13).Tes kultur positif pada 69,23% (9/13). Jamur yang paling sering menyebabkan bola jamur pada sinus adalah Aspergillus niger (61,54%, 8/13). Kesimpulan: Pewarnaan preparat histopatologi menggunakan Hematoxylin dan eosin (H&E) dan Gomori Methenamine Silver (GMS) sangat berguna dan sensitif dalam mendeteksi adanya jamur. Jenis jamur yang paling banyak ditemukan pada penelitian kami adalah Aspergillus niger.

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