scholarly journals Facile Use of ZnO Nanopowders to Protect Old Manual Paper Documents

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5452
Author(s):  
Ludmila Motelica ◽  
Aurelian Popescu ◽  
Anca-Gabriela Răzvan ◽  
Ovidiu Oprea ◽  
Roxana-Doina Truşcă ◽  
...  
Keyword(s):  
Hand Hygiene ◽  
Antimicrobial Agents ◽  
Storage Conditions ◽  
Human Pathogens ◽  
Accessible Method

One of the main problems faced by libraries, archives and collectors is the mold degradation of the paper-based documents, books, artworks etc. Microfungi (molds) emerge in regular storage conditions of such items (humidity, usually over 50%, and temperatures under 21 °C). If the removal of the visible mycelium is relatively easy, there is always the problem of the subsequent appearance of mold as the spores remain trapped in the cellulosic, fibrillary texture, which acts as a net. Moreover, due to improper hand hygiene bacteria contamination, old books could represent a source of biohazard, being colonized with human pathogens. An easy and accessible method of decontamination, which could offer long term protection is therefore needed. Here, we present a facile use of the ZnO nanopowders as antimicrobial agents, suitable for cellulose-based products, conferring an extended antibacterial and anti-microfungal effect. The proposed method does not adversely impact on the quality of the cellulose documents and could be efficiently used for biodegradation protection.

Changes in the content of organic acids and inorganic anions in sugar beet during long-term storage

2016 ◽  
pp. 760-764 ◽  
Author(s):  
Maciej Wojtczak ◽  
Aneta Antczak-Chrobot ◽  
Paulina Miko ◽  
Magdalena Molska ◽  
Ilona Baszczyk ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Storage Conditions ◽  
Denitrifying Bacteria ◽  
Raw Material ◽  
Storage Duration ◽  
Long Term Storage ◽  
Term Storage ◽  
Acetic Acids

Due to the prolongation of the period of the sugar campaign, it is necessary to optimize the storage conditions, so that changes in the quality of the raw material could be minimized. The aim of this study was to determine the effect of storage duration and temperature on changes in the composition of sugar beet. The study presents the changes in the content of glucose, fructose, raffinose, lactic and acetic acids, nitrates and nitrites as well as in the content of the total number of mesophilic bacteria, denitrifying bacteria and spores of denitrifying bacteria during storage under various conditions.

scholarly journals Assessment of Shelf-Life Ability of Apples cv. ‘Auksis’ after Long-term Storage Under Different Conditions

2016 ◽  
Vol 24 (2) ◽  
pp. 37-47 ◽  
Author(s):  
Karina Juhņeviča-Radenkova ◽  
Vitalijs Radenkovs
Keyword(s):  
Shelf Life ◽  
Cold Storage ◽  
Storage Conditions ◽  
Soluble Solids ◽  
Market Condition ◽  
Low Oxygen ◽  
Weight Losses ◽  
Long Term Storage

Abstract The objective of the current research was to ascertain the shelf-life ability of apple ‘Auksis’ after 6 months of cold storage under different conditions. The effect of storage conditions such as: cold storage under normal atmosphere (NA), 1-methylcyclopropene (1-MCP) + cold storage, and ultra-low oxygen (ULO)-controlled atmosphere (CA) [2.0% CO2 and 1.0% O2 (ULO1) and 2.5% CO2 and 1.5% O2 (ULO2)] on the quality of apples during shelf-life was evaluated. Apple fruits immediately after cold storage and after 25 days of maintaining at market condition had been evaluated. The physical (firmness, weight losses), chemical (total soluble solids and acid contents), and sensory (aroma, taste, acidity, sweetness, juiciness, and color) characteristics of apples had been evaluated after 5, 10, 15, 20, and 25 days to ascertain maximal shelf-life. Results from sensory evaluation indicated that apples treated with 1-MCP and stored at NA were characterized with distinctive aroma, whereas apples stored under CA were poor in sweetness and had remarkable acidity and juiciness. Apples that were stored in cold had pronounced aroma and color but without taste. Based on the evaluation by panelist, maximum shelf-life of apples that were kept under cold storage and ULO1 was 15 days, whereas that of apples that had been treated with 1-MCP and stored at NA and those stored in ULO2 was 25 days.

scholarly journals Establishment and quality evaluation of a glioma biobank in Beijing Tiantan Hospital

2017 ◽  
Author(s):  
Fanhong Kong ◽  
Wenli Zhang ◽  
Lin Qiao ◽  
Qi Li ◽  
Haowen Li ◽  
...  
Keyword(s):  
Quality Evaluation ◽  
Protein Quality ◽  
Housekeeping Gene ◽  
Storage Conditions ◽  
Dna Integrity ◽  
Morphological Examination ◽  
Rna Integrity ◽  
Standard Operating

Background: We established a glioma biobank at Beijing Tiantan Hospital in November, 2010.Specialized staffs have been trained to collect, store and manage the biobank in accordance with standard operating procedures. Methods: One hundred samples were selected to evaluate the quality of glioma samples stored in the liquid nitrogen tank during different periods (from 2011 to 2015) by morphological examination, RNA integrity determination, DNA integrity determination, housekeeping gene expression and protein integrity determination. Results: The majority of samples (95%) remain high RNA quality for further analysis with RIN≥6. All samples remain high DNA and protein quality without significant degradation. Conclusion: Storage conditions of our biobank are suitable for long-term (at least 5 years) sample preservation with high molecular quality.

scholarly journals Storage Temperature, Controlled Atmosphere, and 1-Methylcyclopropene Effects on α-Farnesene, Conjugated Trienols, and Peroxidation in Relation with Superficial Scald, Pithy Brown Core, and Fruit Quality of ‘d’Anjou’ Pears during Long-term Storage

2016 ◽  
Vol 141 (2) ◽  
pp. 177-185 ◽  
Author(s):  
Yan Wang
Keyword(s):  
Storage Temperature ◽  
Storage Conditions ◽  
Controlled Atmosphere ◽  
Metabolic Balance ◽  
Superficial Scald ◽  
Long Term Storage ◽  
Temperature Controlled ◽  
Term Storage

Alternatives to ethoxyquin (Etq) are needed for controlling superficial scald of ‘Anjou’ european pears (Pyrus communis) during long-term storage. The current commercial standard storage conditions [Etq + −1 °C + controlled atmosphere (CA) with 1.5 kPa O2] reduced scald occurrence compared with control fruit (−1 °C + CA) during 6–8 months storage. At 1 °C in air, 1-methylcyclopropene (1-MCP) fumigation at 0.15 µL·L−1 at harvest was more efficient on reducing scald than Etq but did not prevent scald during 6–8 months storage. The 1-MCP-treated fruit at 1 °C in air developed their ripening capacity at 20 °C following 6–8 months storage but had deceased shipping ability (softening and yellowing of fruit). Although Etq inhibition of scald was associated with the inhibition of α-farnesene oxidation to conjugated trienols (CTols); 1-MCP reduced α-farnesene synthesis and thereby the availability of substrate to oxidize to CTols. CA storage at 1.5 kPa O2 totally prevented scald and retarded the loss of shipping ability without affecting the ripening capacity of 1-MCP-treated fruit at 1 °C through further decreases in the syntheses of ethylene, α-farnesene and CTols during 6–8 months storage. In addition, 1-MCP prevented a CA-induced disorder, pithy brown core (PBC), in ‘Anjou’ pears possibly through enhancing an oxidative/reductive metabolic balance during extended storage. In conclusion, the combinations of 1 °C + 1-MCP + CA is a potential commercial alternative to Etq for scald control while allowing the 1-MCP-treated ‘Anjou’ pears to recover ripening capacity during the shelf life period after 6–8 months storage.

scholarly journals Establishment and quality evaluation of a glioma biobank in Beijing Tiantan Hospital

2017 ◽  
Author(s):  
Fanhong Kong ◽  
Wenli Zhang ◽  
Lin Qiao ◽  
Qi Li ◽  
Haowen Li ◽  
...  
Keyword(s):  
Quality Evaluation ◽  
Protein Quality ◽  
Housekeeping Gene ◽  
Storage Conditions ◽  
Dna Integrity ◽  
Morphological Examination ◽  
Rna Integrity ◽  
Standard Operating

Background: We established a glioma biobank at Beijing Tiantan Hospital in November, 2010.Specialized staffs have been trained to collect, store and manage the biobank in accordance with standard operating procedures. Methods: One hundred samples were selected to evaluate the quality of glioma samples stored in the liquid nitrogen tank during different periods (from 2011 to 2015) by morphological examination, RNA integrity determination, DNA integrity determination, housekeeping gene expression and protein integrity determination. Results: The majority of samples (95%) remain high RNA quality for further analysis with RIN≥6. All samples remain high DNA and protein quality without significant degradation. Conclusion: Storage conditions of our biobank are suitable for long-term (at least 5 years) sample preservation with high molecular quality.

scholarly journals Harvest Maturity and Storage Affect Quality of `Cripps Pink' (Pink Lady®) Apples

2002 ◽  
Vol 12 (3) ◽  
pp. 388-391 ◽  
Author(s):  
S.R. Drake ◽  
D.C. Elfving ◽  
T.A. Eisele
Keyword(s):  
Fruit Size ◽  
Titratable Acidity ◽  
Storage Conditions ◽  
Soluble Solids ◽  
Solids Concentration ◽  
Peel Color ◽  
Harvest Maturity ◽  
Apple Quality

Quality of `Cripps Pink' apples (Malu × domestica) harvested at a starch index of 2 and 4 was evaluated over three crop seasons. Apple quality was evaluated after harvest and after regular atmosphere (RA) and controlled-atmosphere (CA) storage at 1% O2 and 1% CO2, 1% O2 and 3% CO2, and 1% O2 and 5% CO2 (1 year only) at 1 ºC (33 to 34 ºF). Over three seasons, commercially acceptable fruit quality was achieved on either harvest date following both long-term RA and CA storage. Fruit size was not different between apples harvested at a starch index of 2 or 4. Firmness and acids remained at acceptable levels [62 N (14 lb) and ≥0.50%, respectively] in `Cripps Pink' apples regardless of maturity, storage time or storage conditions. Delaying harvest after a starch index of 2 was achieved increased soluble solids concentration (SSC), SSC to TA (titratable acidity) ratio, peel color, malic acid and citric acid concentrations but decreased fructose content. `Cripps Pink' apples responded well to CA storage conditions of 1% O2 with 1% or 3% CO2, but displayed significant firmness loss and greatly increased internal breakdown at 1% O2 and 5% CO2 at 1 ºC.

scholarly journals Establishment and quality evaluation of a glioma biobank in Beijing Tiantan Hospital

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4450 ◽  
Author(s):  
Fanhong Kong ◽  
Wenli Zhang ◽  
Lin Qiao ◽  
Qi Li ◽  
Haowen Li ◽  
...  
Keyword(s):  
Gene Expression ◽  
Quality Evaluation ◽  
Housekeeping Gene ◽  
Storage Conditions ◽  
Dna Integrity ◽  
Morphological Examination ◽  
Rna Integrity ◽  
Standard Operating

Background We established a glioma biobank at Beijing Tiantan Hospital in November, 2010. Specialized residents have been trained to collect, store and manage the biobank in accordance with standard operating procedures. Methods One hundred samples were selected to evaluate the quality of glioma samples stored in the liquid nitrogen tank during different periods (from 2011 to 2015) by morphological examination, RNA integrity determination, DNA integrity determination and housekeeping gene expression determination. Results The majority of samples (95%) had high RNA quality for further analysis with RIN ≥6. Quality of DNA of all samples were stable without significant degradation. Conclusion Storage conditions of our biobank are suitable for long-term (at least five years) sample preservation with high molecular quality.

Effect of storage conditions on industrial sugar retention in energy beets

2015 ◽  
Vol 1 (1) ◽  
Author(s):  
Juan M. Vargas-Ramirez ◽  
Dennis P. Wiesenborn
Keyword(s):  
Surface Treatment ◽  
Antimicrobial Agents ◽  
Sugar Industry ◽  
Storage Conditions ◽  
Treatment Temperature ◽  
Beet Sugar ◽  
Storage Atmosphere ◽  
Energy Beet ◽  
And Storage

AbstractEnergy beets could compete with corn grain as important industrial-sugar feedstocks for biofuels. However, long-term energy beet storage is necessary to maximize processing equipment use, and storage conditions may entirely differ from those established in the sugar industry. This work evaluated combined effects of surface treatment, temperature, and storage atmosphere on beet sugar retention. Initially, beets were dipped in solutions of either a senescence inhibitor (N6-benzylaminopurine) or one of two antimicrobial agents (acetic acid and pHresh 10.0r) at weight fractions of 0.05 and 0.1%, and 0.1 and 1%, respectively. Beets were then stored for up to 36 wk either under aerobic conditions or in sealed containers, at 6ºC or 25ºC. Surface treatment did not show a statistically significant effect on sugar retention. Aerobic storage at 25ºC enabled initial beet sugar retention due to dehydration caused by low relative humidity (37%) in air. In contrast, aerobic storage at 6ºC enabled sugar retention for 24 wk; however, sugar retention decreased sharply thereafter to 56%. This decrease coincided with mold appearance on beet surfaces. Beets stored in sealed containers at both temperatures retained 38% of initial sugars. Increasing surface area to better incorporate preservatives into beet tissue could improve long-term sugar retention.

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