scholarly journals Discovering Penicillium polinicum with High-Lytic Capacity on Helianthus tuberosus Tubers: Oil-Based Preservation for Mold Management

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 413
Author(s):  
Abdulaziz A. Al-Askar ◽  
Ehsan M. Rashad ◽  
Khalid M. Ghoneem ◽  
Ashraf A. Mostafa ◽  
Fatimah O. Al-Otibi ◽  
...  
Keyword(s):  
Essential Oils ◽  
Room Temperature ◽  
Nutritive Value ◽  
Jerusalem Artichoke ◽  
Storage Conditions ◽  
Peat Moss ◽  
Helianthus Tuberosus ◽  
Blue Mold ◽  
First Time ◽  
Storage Technique

During preservation, Jerusalem artichoke (JA) tubers are subjected to deterioration by mold fungi under storage, which signifies a serious problem. A new blue mold (Penicillium polonium) was recorded for the first time on JA tubers. Penicillium mold was isolated, identified (morphologically, and molecularly), and deposited in GenBank; (MW041259). The fungus has a multi-lytic capacity, facilitated by various enzymes capable of severely destroying the tuber components. An economic oil-based procedure was applied for preserving and retaining the nutritive value of JA tubers under storage conditions. Caraway and clove essential oils, at a concentration of 2%, were selected based on their strong antifungal actions. JA tubers were treated with individual oils under storage, kept between peat moss layers, and stored at room temperature. Tubers treated with both oils exhibited lower blue mold severity, sprouting and weight loss, and higher levels of carbohydrates, inulin, and protein contents accompanied by increased levels of defense-related phytochemicals (total phenols, peroxidase, and polyphenol oxidase). Caraway was superior, but the results endorse the use of both essential oils for the preservation of JA tubers at room temperature, as an economic and eco-safe storage technique against the new blue mold.

scholarly journals Physical Stability and Viscoelastic Properties of Co-Amorphous Ezetimibe/Simvastatin System

2019 ◽  
Vol 12 (1) ◽  
pp. 40 ◽  
Author(s):  
Justyna Knapik-Kowalczuk ◽  
Krzysztof Chmiel ◽  
Karolina Jurkiewicz ◽  
Natália Correia ◽  
Wiesław Sawicki ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Viscoelastic Properties ◽  
Room Temperature ◽  
Physical Stability ◽  
Ternary Systems ◽  
Storage Conditions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Temperature Conditions ◽  
First Time

The purpose of this paper is to examine the physical stability as well as viscoelastic properties of the binary amorphous ezetimibe–simvastatin system. According to our knowledge, this is the first time that such an amorphous composition is prepared and investigated. The tendency toward re-crystallization of the amorphous ezetimibe–simvastatin system, at both standard storage and elevated temperature conditions, have been studied by means of X-ray diffraction (XRD). Our investigations have revealed that simvastatin remarkably improves the physical stability of ezetimibe, despite the fact that it works as a plasticizer. Pure amorphous ezetimibe, when stored at room temperature, begins to re-crystallize after 14 days after amorphization. On the other hand, the ezetimibe-simvastatin binary mixture (at the same storage conditions) is physically stable for at least 1 year. However, the devitrification of the binary amorphous composition was observed at elevated temperature conditions (T = 373 K). Therefore, we used a third compound to hinder the re-crystallization. Finally, both the physical stability as well as viscoelastic properties of the ternary systems containing different concentrations of the latter component have been thoroughly investigated.

scholarly journals A first report of a new chemotype of Thymus migricus (Klokov & Desj-Shost) from East Azarbaijan province of Iran

2016 ◽  
Vol 61 (2) ◽  
pp. 163-169
Author(s):  
Yousef Dizajeyekan ◽  
Ahmad Haghighi ◽  
Rasoul Rangavaran
Keyword(s):  
Essential Oils ◽  
Volatile Compounds ◽  
Sodium Sulfate ◽  
Room Temperature ◽  
Anhydrous Sodium Sulfate ◽  
Geranyl Acetate ◽  
Northwestern Iran ◽  
East Azerbaijan ◽  
Total Oil ◽  
First Time

In order to determine Thymus migricus volatile compounds, sampling from two regions of East Azerbaijan province located in Northwestern Iran was performed. After drying the samples at room temperature, the essential oils were taken by the hydrodistillation method for 2.5 hours. The essential oils were dehydrated over anhydrous sodium sulfate. Compositions of the oils were identified by GC and GC-MS analyses. The eleven and nine identified compounds from Mishoo and Espiran regions represent 94.62% and 86.08% total oil compositions, respectively. In Mishoo, the percentages of main compounds included linalool (65.57%), citronellol (15.63%) and geraniol (2.79%) and in Espiran, there were linalool (46.36%), geraniol (26.74%), and geranyl acetate (6.17%). The present chemotype of this species is reported for the first time in East Azarbaijan, Iran.

scholarly journals Essential oils for the postharvest control of blue mold and quality of 'Fuji' apples

2018 ◽  
Vol 53 (5) ◽  
pp. 547-556 ◽  
Author(s):  
Amanda Maria Furtado Drehmer Vieira ◽  
Cristiano André Steffens ◽  
Luiz Carlos Argenta ◽  
Cassandro Vidal Talamini do Amarante ◽  
Andreia Hansen Oster ◽  
...  
Keyword(s):  
Essential Oils ◽  
Room Temperature ◽  
Fungal Spores ◽  
Penicillium Expansum ◽  
Blue Mold ◽  
Citronella Oil ◽  
Chemical Attributes ◽  
Physical And Chemical

Abstract: The objective of this work was to evaluate the effect of rosemary, cinnamon, citronella grass, and clove essential oils on the in vitro growth of Penicillium expansum, on the diameter of blue mold lesions, and on the physical and chemical attributes of 'Fuji' apples stored under refrigeration for different periods of time. The compositions of the essential oils were determined, and their effects on the growth inhibition, number, and viability of fungal spores in vitro were evaluated at 0, 100, and 1,000 μL L-1 oil concentrations. At postharvest, evaluations were performed for fruit treated with 0, 50, 100, and 500 μL L-1 essential oil and kept under refrigeration for 30 days, and for fruit treated with 0, 100, and 500 μL L-1 oil and kept under refrigeration for two days. The essential oils - eucalyptol (rosemary), eugenol (cinnamon), citronellal (citronella), and eugenol (clove) - reduce the growth, number, and viability of P. expansum spores 24 hours after the induction to germination, as well as the diameter of blue mold lesions in apples, except for citronella oil at 500 μL L-1 after 30 days of cold storage. There are no changes in the physicochemical attributes of apples, treated with different concentrations of the oils after refrigeration for five months, followed by seven days at room temperature.

scholarly journals VARIABILTY AND STABILTY OF TUBER YIELD OF JERUSALEM ARTICHOKE (Helianthus tuberosus L.) / VARIABILIDAD Y ESTABILIDAD DEL RENDIMIENTO DE TUBERCULOS DEL TOPINAMBO / VARIABILITÉ ET STABILITÉ DU RENDEMENT DU TUBERCULE DE TOPINAMBUR

Helia ◽  
2001 ◽  
Vol 24 (35) ◽  
pp. 25-32 ◽  
Author(s):  
Janoš Berenji ◽  
Vladimir Sikora
Keyword(s):  
Tuber Yield ◽  
Jerusalem Artichoke ◽  
Tuber Size ◽  
Yield Stability ◽  
Tuber Number ◽  
High Yield ◽  
Helianthus Tuberosus ◽  
Variety Trial ◽  
Stable Performance ◽  
The Stability

SUMMARYThe objective of this paper was to estimate the genetic and ecological variation as well as the stability of tuber yield per plant, tuber number per plant and tuber size of Jerusalem artichoke based on the results of a variety trial carried out with 20 different Jerusalem artichoke varieties during the period of 1994-2000. Significant genetic as well as ecologycal variation was observed for all of the traits studied. The most promissing varieties showing high tuber yield combined with high yield stability were “BT-4”, “Violet Rennes” and “UKR 4/ 82”. It is encouraging that the highest yielding varieties exibited a rather stable performance over environments.

Room-temperature white and color-tunable afterglow by manipulating multi-mode triplet emissions

2021 ◽  
Vol 9 (9) ◽  
pp. 3257-3263
Author(s):  
Jianwei Liu ◽  
Zhimin Ma ◽  
Zewei Li ◽  
Yan Liu ◽  
Xiaohua Fu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Single Component ◽  
Color Tunable ◽  
First Time ◽  
Multi Mode

Two isomers pDCzPyCN and oDCzPyCN are designed and synthesized. Amazingly, oDCzPyCN manifest white afterglow at room temperature. This is the first time that single-component white afterglow has finally been realized.

Sign in / Sign up

Export Citation Format

Share Document