scholarly journals Encapsulation and Degradation Kinetics of Bioactive Compounds from Sweet Potato Peel During Storage

2020 ◽  
Vol 58 (3) ◽  
pp. 314-324
Author(s):  
Vanja Šeregelj ◽  
Gordana Ćetković ◽  
Jasna Čanadanović-Brunet ◽  
Vesna Tumbas Šaponjac ◽  
Jelena Vulić ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Spray Drying ◽  
Sweet Potato ◽  
Bioactive Compounds ◽  
Freeze Drying ◽  
Degradation Kinetics ◽  
Core Material ◽  
Potato Peel ◽  
Coating Agent ◽  
Drying Techniques

Research background: The aim of this work was to evaluate utilization of sweet potato peel as a source of bioactive compounds. The effect of solvents (acetone and acetone/ethanol mixture) on extraction efficiency of total carotenods and phenolics from sweet potato flesh tuber and peel, and antioxidant activity were investigated. SPP extract standed out in terms of antioxidant activity and was choosen for encapsulation by spray and freeze drying techniques. Experimental approach: Encapsulation is an effective method to improve phytochemical stability by entrapping the core material with a coating agent. In this study, spray and freeze-drying techniques were applied for improving the stability of bioactive compounds (carotenoids and phenolics) using whey protein as a coating material. The main advantages of applied techniques over the other encapsulation techniques are simplicity, continuity, effectiveness, availability, and applicability. Results and conclusions: Physicochemical characteristics revealed that spray drying resulted in the formation of lower size particles, better flowing properties, and encapsulation efficiency of carotenoids. The retention of encapsulated and non-encapsulated bioactive compounds was monitoring during storage at daylight and dark conditions. Storage conditions affected the carotenoid retention, whereas daylight exhibited the higher degradation rate for all samples. Phenolic compounds exhibited higher retention for all investigated samples. Degradation kinetic parameters suggest the longer shelf life of spray dried encapsulates and potent method for bioactives stabilization. Novelty and scientific contribution: This study demonstrates that the spray drying technique and utilization of sweet potato peel have big potential in functional additives development, with improved nutritional, color and bioactive properties.

Optimising Conditions for Encapsulation of Salacia chinensis Root Extract enriched with Phenolic Compounds

2021 ◽  
Vol 02 ◽  
Author(s):  
Thanh V. Ngo ◽  
Christopher J. Scarlett ◽  
Michael C. Bowyer ◽  
Rebecca McCullum ◽  
Quan V. Vuong
Keyword(s):  
Antioxidant Activity ◽  
Spray Drying ◽  
Feed Rate ◽  
Freeze Drying ◽  
Antioxidant Activities ◽  
Inlet Temperature ◽  
Root Extract ◽  
Optimal Conditions ◽  
Dried Extract ◽  
Drying Conditions

Background: S. chinensis extract contains bioactive compounds, which exhibit high antioxidant activities. However, for commercial uses, it is necessary to encapsulate the extract to protect it from degradation. Objective: This study aimed to optimise spray-drying conditions and then compare with freeze-drying to identify the most suitable conditions for encapsulation of Salacia chinensis L. root extract. Method: Three factors of spray-drying encapsulation, including maltodextrin concentration, inlet temperature and feed rate, have been tested for the impacts on the physical and phytochemical properties of S. chinensis root extract. Based on the optimal conditions, the spray-drying was then compared with freeze-drying. Results: The results showed that maltodextrin concentration, inlet temperature and feed rate had significant impacts on recovery yield, phenolics, mangiferin and antioxidant activity of the spray-dried extract. The optimal spray-drying encapsulation conditions were maltodextrin concentration of 20 %, inlet temperature of 130ºC and feed rate of 9 mL/min. Under these optimal conditions, the encapsulated extract had comparable solubility, total phenolics, mangiferin, and antioxidant activity, lower bulk density, moisture content, and water activity as compared to encapsulated extract made using the freeze-drying technique. These optimal spray-drying conditions are recommended to encapsulate the extract of S. chinensis root. Conclusion: Spray-drying was found to be more effective for encapsulation of S. chinensis root extract than freeze-drying. Therefore, spray-drying is recommended for further applications.

scholarly journals Effect of Thermal Processing on Antioxidant Activity and Cytotoxicity of Waste Potato Juice

2019 ◽  
Vol 14 (1) ◽  
pp. 150-157 ◽  
Author(s):  
Przemysław Łukasz Kowalczewski ◽  
Anna Olejnik ◽  
Wojciech Białas ◽  
Piotr Kubiak ◽  
Aleksander Siger ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Low Temperature ◽  
Cytotoxic Activity ◽  
Spray Drying ◽  
Cell Lines ◽  
Freeze Drying ◽  
Cytotoxic Activities ◽  
Normal Cells ◽  
Stabilization Methods ◽  
The Impact

AbstractPotato juice (PJ), commonly considered a burdensome waste, is rich in various compounds with bioactive properties. It has long been considered a remedy for gastric problems in traditional folk medicine. If valorization of PJ through implementation in the production of functional foods is to be considered, stabilization methods must be developed to allow long-term storage of this seasonal product. It is important that such methods are chosen with regard to their effect on the bioactive value of the obtained product. In this study, the impact of four stabilization methods on the antioxidant and cytotoxic activities of PJ was investigated. Elevated temperatures were used in thermal deproteinization used to obtain DPJW (deproteinated potato juice water) and spray-drying of FPJ (fresh potato juice) that resulted in SDPJ. Freeze drying and cryoconcentration were the low temperature processing methods that yielded PJL (potato juice lyophilisate) and CPJ (cryocorncentrated potato juice), respectively. All processed materials were characterized chemically and compared with raw materials in terms of phenolic compounds content, antioxidant activity as well as cytotoxicity to human tumor cells isolated from the gastric mucosa (Hs476T cell line), colon (Caco-2 and HT-29 cell lines), and normal cells isolated from the small intestine and colon epithelium (IEC-6 and NCM460 cell lines). It was stated that high-temperature processes – thermal deproteinization and spray-drying – yielded products with increased antioxidant potential (TEAC) that also showed increased cytotoxic activity towards intestinal cancer cells. At the same time the cytotoxicity towards normal cells remained on par with that of fresh PJ (IEC-6 cells) or decreased (NCM460 cells). Thermal deproteinization significantly decreased the content of glycoalcaloids in the juice, while spray drying did not have such an effect. The two low-temperature processes investigated – cryoconcentration and freeze drying – did not affect the PJ cytotoxic activity towards any of the cell lines used in the tests, whereas they did affect the antioxidant properties and glycoalcaloids content of PJ.

scholarly journals MICROENCAPSULATION OF PULP OF MANGIFERA INDICA L. BY SPRAY DRYING AND ANTIOXIDANT ACTIVITY

2017 ◽  
Vol 9 (12) ◽  
pp. 181
Author(s):  
Nerlis Paola Pajaro Castro ◽  
Clemente Granados Conde ◽  
Miladys Esther Torrenegra AlarcÓn ◽  
MarÍa Del Rosario Osorio Fortich ◽  
Enilson JÓse Pajaro Castro ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Spray Drying ◽  
Mineral Content ◽  
Mangifera Indica ◽  
Life Time ◽  
Total Phenol Content ◽  
Drying Method ◽  
Drying Techniques ◽  
Ic50 Values ◽  
Mango Pulp

Introduction: For the food industry and trade, it is very important to obtain powders based on fruits or vegetables by means of drying techniques that allow them to preserve their nutritional, organoleptic properties and also extend the life time by offering new commercialization possibilities. Studies have made it possible to optimize drying techniques by obtaining water-free products in more than 80% with a high commercial value. To microencapsulate the mango pulp (Mangifera indica L) flounder variety by the Spray Drying method and to evaluate its potential antioxidant activity.Methodology: The fruits were collected in the municipality of Turbana - Bolívar (10º 16 '22 "N 75º 26' 38" W), Colombia. The pulps obtained from the healthy fruits were microencapsulated by the spray drying method. The obtained microcapsules were measured the particle size and the mineral content was determined. The antioxidant activity was determined by three methodologies: total phenols, DPPH • and ABTS • +.Results: The results obtained demonstrate that the microcapsules of the mango pulp (M. indica L) have a mineral content in the following order of importance Calcium> Phosphorus> Iron. The IC50 values for the DPPH • and ABTS • assay were found to be 110.54 ± 1.5 μg / mL and 65.33 ± 1.0 μg / mL respectively. The total phenol content was 73.11 ± 1.54 mg AG / 100 mg of microcapsules, which may be related to the antioxidant activity.Conclusion: The spray drying method was a suitable technique to microcapsulate the mango pulp (M.indica L), which were shown to possess antioxidant activity.

scholarly journals STABILITY OF MICROSPHERE OF SARGASSUM PLAGYOPHYLLUM (MERTENS) J. G. AGARDH EXTRACT PRODUCED BY SPRAY DRYING USING MALTODEXTRIN

2018 ◽  
Vol 10 (1) ◽  
pp. 376
Author(s):  
Effionora Anwar ◽  
Dyah Ayu Ratna Yulianti ◽  
Kurnia Sari Setio Putri
Keyword(s):  
Antioxidant Activity ◽  
Spray Drying ◽  
Brown Seaweed ◽  
Inlet Temperature ◽  
Aqueous Extracts ◽  
Size Distributions ◽  
Particle Size Distributions ◽  
Coating Agent ◽  
Polyphenol Compounds ◽  
The Stability

Objective: This study aimed to determine the stability of microspheres of Sargassum plagyophyllum (brown seaweed) after preparation using spraydrying with maltodextrin DE 10–15 and during drying and storage.Methods: Aqueous extracts of brown seaweed were formulated into microspheres using maltodextrin DE 10–15 as a coating agent. For increasing thestability of polyphenol compounds, spray drying was performed with an inlet temperature of 110°C. Four microsphere formulations were producedusing maltodextrin DE 10–15 at concentrations of 0%, 5%, 10%, and 15%. The resulting microspheres were then characterized in the assessments ofmoisture contents, particle size distributions, pH, total phlorotannin contents, and antioxidant activity, and surface morphology was analyzed usingscanning electron microscope analyses.Results: Powders that were produced with 0% and 15% maltodextrin were more stable at 4°C±2°C than at 28°C±2°C and 40°C±2°C. At the lowesttemperature, phlorotannin contents were maintained in powders that were prepared with 15% maltodextrin but were decreased by 10% in powdersthat were prepared without maltodextrin.Conclusion: Maltodextrin DE 10–15 is a suitable coating agent for dry formulations of S. plagyophyllum powder and maintained stability during spraydrying at 110°C and during storage for 2 months at 4°C±2°C.

Encapsulation and delivery of bioactive compounds using spray and freeze-drying techniques: A review

2019 ◽  
Vol 38 (1-2) ◽  
pp. 235-258 ◽  
Author(s):  
Amir Rezvankhah ◽  
Zahra Emam-Djomeh ◽  
Gholamreza Askari
Keyword(s):  
Bioactive Compounds ◽  
Freeze Drying ◽  
Drying Techniques

scholarly journals Extended release promethazine HCl using acrylic polymers by freeze-drying and spray-drying techniques: formulation considerations

2009 ◽  
Vol 45 (4) ◽  
pp. 829-840 ◽  
Author(s):  
Ruchi Tiwari ◽  
Birendra Srivastava ◽  
Gaurav Tiwari ◽  
Awanik Rai
Keyword(s):  
Spray Drying ◽  
Freeze Drying ◽  
Extended Release ◽  
In Vitro Dissolution ◽  
Adsorptive Capacity ◽  
Acrylic Polymers ◽  
Dissolution Studies ◽  
Eudragit S100 ◽  
Drying Techniques

The present study investigated a novel extended release system of promethazine hydrochloride (PHC) with acrylic polymers Eudragit RL100 and Eudragit S100 in different weight ratios (1:1 and 1: 5), and in combination (0.5+1.5), using freeze-drying and spray-drying techniques. Solid dispersions were characterized by Fourier-transformed infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), Powder X-ray diffractometry (PXRD), Nuclear magnetic resonance (NMR), Scanning electron microscopy (SEM), as well as solubility and in vitro dissolution studies in 0.1 N HCl (pH 1.2), double-distilled water and phosphate buffer (pH 7.4). Adsorption tests from drug solution to solid polymers were also performed. A selected solid dispersion system was developed into capsule dosage form and evaluated for in vitro dissolution studies. The progressive disappearance of drug peaks in thermotropic profiles of spray-dried dispersions were related to increasing amount of polymers, while SEM studies suggested homogenous dispersion of drug in polymer. Eudragit RL100 had a greater adsorptive capacity than Eudragit S100, and thus its combination in (0.5+1.5) for S100 and RL 100 exhibited a higher dissolution rate with 97.14% drug release for twelve hours. Among different formulations, capsules prepared by combination of acrylic polymers using spray-drying (1:0.5 + 1.5) displayed extended release of drug for twelve hours with 96.87% release followed by zero order kinetics (r²= 0.9986).

scholarly journals Design of Healthy Snack Based on Kiwifruit

Molecules ◽  
2020 ◽  
Vol 25 (14) ◽  
pp. 3309 ◽  
Author(s):  
Urszula Tylewicz ◽  
Malgorzata Nowacka ◽  
Katarzyna Rybak ◽  
Kinga Drozdzal ◽  
Marco Dalla Rosa ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Bioactive Compounds ◽  
Freeze Drying ◽  
Bioactive Compound ◽  
Convective Drying ◽  
Drying Methods ◽  
Hot Air ◽  
Sugar Addition ◽  
High Antioxidant Activity

Kiwifruit is an excellent source of vitamin C and other bioactive compounds, which contribute to its high antioxidant activity. However, the fruits with small size and low weight are considered waste and are unprofitable; therefore, the production of healthy kiwifruit-based dried snacks, which contain a lot of health-beneficial ingredients, could be a viable alternative for their use. The aim of this study was to develop formulations and methods to produce attractive and nutritionally valuable dried snacks based on yellow kiwifruit. Three different puree formulations (kiwifruit; fennel; and strawberry, lemon, or spinach) with or without addition of sugar were subjected to two drying methods: freeze-drying (fruit bars) and conventional hot air drying (fruit leathers). The obtained products were analysed for their content of total polyphenols (TPs), flavonoids, and vitamin C, as well as their antioxidant activity. The results showed that snacks prepared by freeze-drying (fruit bars) presented higher TP, vitamin C, and flavonoids content than those prepared by convective drying; however, the antioxidant activity did not always follow this trend. The amount of bioactive compounds depended on the formulation used for the preparation of snacks. The effect of the sugar addition seems to be strictly related to the mix used and specific bioactive compound investigated.

Sign in / Sign up

Export Citation Format

Share Document