Effects of freeze drying process on the production of cashew apple powder: Determination of bioactive compounds and fruit powder properties

2021 ◽  
Author(s):  
R Harin ◽  
G Nandhini Devi
Keyword(s):  
Bioactive Compounds ◽  
Freeze Drying ◽  
Drying Process ◽  
Cashew Apple ◽  
Powder Properties ◽  
Fruit Powder

scholarly journals Determination of End Point of Primary Drying in Freeze-Drying Process Control

2010 ◽  
Vol 11 (1) ◽  
pp. 73-84 ◽  
Author(s):  
Sajal M. Patel ◽  
Takayuki Doen ◽  
Michael J. Pikal
Keyword(s):  
Process Control ◽  
Freeze Drying ◽  
Drying Process ◽  
End Point

The Influence of Different Product Process on the Effect Ingredient Content of Ningxia Lycium barbarum

2011 ◽  
Vol 204-210 ◽  
pp. 2083-2086
Author(s):  
Yun Feng Hu ◽  
Han Yan Hu ◽  
Chang Jie Jiang ◽  
Yan Hua Zhu ◽  
Jian Ming Wang
Keyword(s):  
Amino Acid ◽  
Enzymatic Hydrolysis ◽  
Crude Protein ◽  
Freeze Drying ◽  
Raw Materials ◽  
Carotenoid Content ◽  
Drying Process ◽  
Lycium Barbarum ◽  
Effective Component

Lycium barbarum as raw materials, after press, enzymatic hydrolysis, separation and drying process to a series of different Lycium barbarum products, through determination of effective ingredients content, such as carotenoid, amino acid, crude protein, crude fat, tried to explore the influence of effective component on different processing methods. The result showed that after pressing, enzymatic hydrolysis, separation technology, a large number of carotenoid, amino acid was retained in original slurry, juice, clear juice only have little. The carotenoid content of freeze-drying fruit were lost obiously during the different course of drying, such as air-drying, mechanical-drying, freeze-drying. Spray drying can destroy crude protein and fat activity, but it can be used to improve free amino acid in Lycium barbarum.

Determination of freeze-drying process variables for strawberries

1997 ◽  
Vol 32 (2) ◽  
pp. 133-154 ◽  
Author(s):  
Chokri Hammami ◽  
Frédéric René
Keyword(s):  
Freeze Drying ◽  
Process Variables ◽  
Drying Process

DEGRADATION OF 2,4-DICHLOROPHENOXYACETIC ACID BY Pseudomonas fluorescens Strain HH

2018 ◽  
Vol 40 (3) ◽  
Author(s):  
Nguyen Thi Oanh ◽  
Ha Danh Duc ◽  
Tran Dat Huy ◽  
Nguyen Gia Hien ◽  
Nguyen Thi Huynh Nhu
Keyword(s):  
Pseudomonas Fluorescens ◽  
Freeze Drying ◽  
Exponential Growth Phase ◽  
Dichlorophenoxyacetic Acid ◽  
Drying Process ◽  
Suspension Cells ◽  
Edwards Model ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Cell Growth Kinetics

Pseudomonas fluorescens HH isolated from soil utilized 2,4-Dichlorophenoxyacetic acid (2,4D) as a sole carbon and energy source. The strain completely utilized 1.0 mM of 2,4D within 30 hr. The immobilized Pseudomonas fluorescens HH degraded 2,4D with higher rates compared to the rates of free-suspension cells. The determination of degradation and cell growth kinetics in exponential growth phase of bacteria showed that both fitted with the Edwards model, in which the maximal utilization rates and inhibition coefficient were 0.079 ± 0.008 mM/h and 0.820 ± 0.03 mM, respectively. The addition of glycerol as a cryoprotectant into alginate increased the survival of bacteria in beads during freeze-drying process, which resulted in reducing the adverse effects of bead lyophilization.

scholarly journals Modelling the primary drying step for the determination of the optimal dynamic heating pad temperature in a continuous pharmaceutical freeze-drying process for unit doses

2017 ◽  
Vol 532 (1) ◽  
pp. 185-193 ◽  
Author(s):  
Laurens De Meyer ◽  
Joris Lammens ◽  
Séverine Thérèse F.C. Mortier ◽  
Brecht Vanbillemont ◽  
Pieter Jan Van Bockstal ◽  
...  
Keyword(s):  
Freeze Drying ◽  
Drying Process ◽  
Optimal Dynamic ◽  
Dynamic Heating

Video real-time imaging of artificial membranes during freeze-drying by cryo-electron microscopy

1988 ◽  
Vol 46 ◽  
pp. 16-17
Author(s):  
Alan S. Rudolph ◽  
Ronald R. Price
Keyword(s):  
Real Time ◽  
Self Assembly ◽  
Freeze Drying ◽  
Video Capture ◽  
Drying Process ◽  
Artificial Membranes ◽  
The Past ◽  
Cryo Electron Microscopy ◽  
Spherical Structures ◽  
Capture Techniques

We have employed cryoelectron microscopy to visualize events that occur during the freeze-drying of artificial membranes by employing real time video capture techniques. Artificial membranes or liposomes which are spherical structures within internal aqueous space are stabilized by water which provides the driving force for spontaneous self-assembly of these structures. Previous assays of damage to these structures which are induced by freeze drying reveal that the two principal deleterious events that occur are 1) fusion of liposomes and 2) leakage of contents trapped within the liposome [1]. In the past the only way to access these events was to examine the liposomes following the dehydration event. This technique allows the event to be monitored in real time as the liposomes destabilize and as water is sublimed at cryo temperatures in the vacuum of the microscope. The method by which liposomes are compromised by freeze-drying are largely unknown. This technique has shown that cryo-protectants such as glycerol and carbohydrates are able to maintain liposomal structure throughout the drying process.

Advances in the Chromatographic Separation and Determination of Bioactive Compounds for Assessing the Nutrient Profile of Nuts

2020 ◽  
Vol 16 ◽  
Author(s):  
Natasa P. Kalogiouri ◽  
Natalia Manousi ◽  
Erwin Rosenberg ◽  
George A. Zachariadis ◽  
Victoria F. Samanidou
Keyword(s):  
Fatty Acids ◽  
Phenolic Compounds ◽  
Bioactive Compounds ◽  
High Performance ◽  
Unsaturated Fatty Acids ◽  
Nutritional Deficiencies ◽  
Analytical Technique ◽  
High Volatility ◽  
Analytical Approaches

Background:: Nuts have been incorporated into guidelines for healthy eating since they contain considerable amounts of antioxidants and their effects are related to health benefits since they contribute to the prevention of nutritional deficiencies. The micronutrient characterization is based mainly on the determination of phenolics which is the most abundant class of bioactive compounds in nuts. Terpenes constitute another class of bioactive compounds that are present in nuts and show high volatility. The analysis of phenolic compounds and terpenes are very demanding tasks that require optimization of the chromatographic conditions to improve the separation of the components. Moreover, nuts are rich in unsaturated fatty acids and they are therefore considered as cardioprotective. Gas chromatography is the predominant instrumental analytical technique for the determination of derivatized fatty acids and terpenes in food matrices, while high performance liquid chromatography is currently the most popular technique for the determination of phenolic compounds Objective:: This review summarizes all the recent advances in the optimization of the chromatographic conditions for the determination of phenolic compounds, fatty acids and terpenes in nuts Conclusion:: The state-of-the art in the technology available is critically discussed, exploring new analytical approaches to reduce the time of analysis and improve the performance of the chromatographic systems in terms of precision, reproducibility, limits of detection and quantification and overall quality of the results

scholarly journals A Toolbox for the Determination of Nitroaromatic Explosives in Marine Water, Sediment, and Biota Samples on Femtogram Levels by GC-MS/MS

Toxics ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 60
Author(s):  
Tobias Hartwig Bünning ◽  
Jennifer Susanne Strehse ◽  
Ann Christin Hollmann ◽  
Tom Bötticher ◽  
Edmund Maser
Keyword(s):  
Sample Preparation ◽  
Freeze Drying ◽  
Solid Phase ◽  
Phase Extraction ◽  
Direct Extraction ◽  
Time Saving ◽  
Marine Samples ◽  
Volume Method ◽  
Biota Samples

To determine the amount of the explosives 1,3-dinitrobenzene, 2,4-dinitrotoluene, 2,4,6-trinitrotoluene, and its metabolites in marine samples, a toolbox of methods was developed to enhance sample preparation and analysis of various types of marine samples, such as water, sediment, and different kinds of biota. To achieve this, established methods were adapted, improved, and combined. As a result, if explosive concentrations in sediment or mussel samples are greater than 10 ng per g, direct extraction allows for time-saving sample preparation; if concentrations are below 10 ng per g, techniques such as freeze-drying, ultrasonic, and solid-phase extraction can help to detect even picogram amounts. Two different GC-MS/MS methods were developed to enable the detection of these explosives in femtogram per microliter. With a splitless injector, limits of detection (LODs) between 77 and 333 fg/µL could be achieved in only 6.25 min. With the 5 µL programmable temperature vaporization—large volume method (PTV-LVI), LODs between 8 and 47 fg/µL could be achieved in less than 7 min. The detection limits achieved by these methods are among the lowest published to date. Their reliability has been tested and confirmed by measuring large and diverse sample sets.

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