scholarly journals Effects of Spray-Drying Temperatures and Ratios of Gum Arabic to Microcrystalline Cellulose on Antioxidant and Physical Properties of Mulberry Juice Powder

Beverages ◽  
2018 ◽  
Vol 4 (4) ◽  
pp. 101 ◽  
Author(s):  
Hoa T.T. Do ◽  
Ha V.H. Nguyen

This study aimed to investigate the influences of inlet air temperatures (120 °C, 130 °C, 140 °C and 150 °C, 160 °C) and the ratios of gum Arabic to microcrystalline cellulose on the quality of mulberry juice powder produced by the spray drying process. Determination of moisture content, bulk density, solubility, total phenolic content (TPC), total anthocyanin content (TAC) and antioxidant capacity (AC) of the obtained powders was performed. The study on temperatures showed that all parameters studied were significantly affected by the shift in temperatures. The powder dried at 160 °C had the highest TPC (38.32 ± 0.36 mg GAE/g DW) and water solubility index (78.70 ± 0.75%); however, it had the lowest moisture content (3.90 ± 0.14%) when compared with the samples dried at other temperatures. Meanwhile, at 140 °C, powder samples with the highest TAC (4.690 ± 0.18 mg cyd-3-glu/g DW) and highest AC (648.09 ± 22.98 µmol TE/g DW), respectively, were obtained. Increasing microcrystalline cellulose and decreasing gum Arabic contents in the carrier mixtures showed significant decreases in moisture content, bulk density, solubility, TPC, TAC and AC.

2020 ◽  
Vol 14 (4) ◽  
pp. 2407-2416
Author(s):  
Nguyen Phuoc Minh

Roselle (Hibiscus sabdariffa) was a member of Malvaceae family. Its calyxes had bright red color due to presence of anthocyanin with an excellent antioxidant property. Raw roselle (Hibiscus sabdariffa L.) calyx was highly perishable due to its high moisture content. In order to diversify products from this plant, this research evaluated the possibility of spray drying for roselle extract into dried powder for long-term consumption. We focused on the effect of sugar alcohols (mannitol, sorbitol, isomalt, xylitol, erythritol) at 8%, carrier agents (maltodextrin, gum arabic, glutinous starch, whey protein concentrate, carboxymethyl cellulose) at 12%, operating parameters of spray dryer (inlet/outlet air temperature, feed rate) on physicochemical quality (bulk density, solubility, total phenolic content, total flavonoid content, anthocyanin content) of rosselle powder. Results showed that the optimal spray drying variables for rosselle powder should be 8% isomalt, 12% whey protein concentrate, inlet/ outlet air temperature 140/85oC/oC, feed rate 12 ml/min. Based on these optimal conditions, the highest physicochemical attributes of the dried roselle calyx powder would be obtained.


2021 ◽  
Vol 1033 ◽  
pp. 87-92
Author(s):  
Lilis Kistriyani ◽  
Lutfi Kurniawan ◽  
Fadhli Syaputra ◽  
Achmad Chafidz

The purpose of this study was to determine and compare the effect of oven drying and spray drying treatments on the encapsulation of anthocyanin, flavonoid and phenolic extracted from watermelon rind. The analysis done in this work were as follow: total anthocyanin (TA), total flavonoid (TF) and total phenolic (TPC) content in the supernatant, yield of nanocapsule, Particle Size Analysis, and In Vitro test (test for flavonoid and phenolic release) in the supernatant food. The analysis results showed that the total anthocyanin content in watermelon rind with a spray drying treatment was 0.1113 mg/L, total flavonoid was 0.6159 g/mL, and total phenolic was 0.3410 g/mL. While using the oven, the anthocyanin content was 0.0891 mg/L, total flavonoid was 1.4590 g/mL, and total phenolic was 1.1349 g/mL. As noticed, the total content of anthocyanin resulted by using a spray dryer was greater than by using an oven. However, the total flavonoid and total phenolic resulted by using a spray dryer was smaller than by using an oven. During In Vitro analysis, the results of the release of flavonoid and phenolic resulted by using an oven into the distilled water were much larger and unstable than by using a spray dryer. This is likely because chitosan-Na (TPP) bonds are weak. Additionally, the yield of capsule on the use of spray dryer was 0.6, higher than the use of an oven, which was 0.48. While, the average particle size in the use of a spray dryer was 2.296 μm, smaller than the use of an oven, which was 61.998 μm.


Beverages ◽  
2018 ◽  
Vol 4 (3) ◽  
pp. 56 ◽  
Author(s):  
Chi Nguyen ◽  
Ha Nguyen

This study was conducted to investigate the effects of ultrasonic treatments on the extraction yield and the quality of mulberry juice. The mulberry mash was treated with ultrasound at different incubation times from 30 to 120 min and different temperatures from 30 to 75 °C. The determination of the juice yield, total phenolic content, total anthocyanin content, antioxidant capacity, l-ascorbic acid content, total soluble solids, and the titratable acidity of the juice were carried out. Overall, applying ultrasound at 45 °C for 60 min resulted in the highest juice yield and antioxidant contents for the mulberry juice. The ultrasonic treatment increased the extraction yield (29.6%), the total soluble solid (8.7%), the titratable acidity (39.3%), the l-ascorbic acid content (94.3%), total phenolic content (174.1%), total anthocyanin content (156.9%) and the antioxidant capacity (40.7%) of the mulberry juice as compared to pressing only. A strong positive correlation between the total phenolic content and the antioxidant capacity indicated that phenolic compounds were the main antioxidants in the beverage.


Proceedings ◽  
2020 ◽  
Vol 70 (1) ◽  
pp. 26
Author(s):  
Mariana S. Lingua ◽  
Virginia Salomón ◽  
María V. Baroni ◽  
Jesica E. Blajman ◽  
Luis María Maldonado ◽  
...  

Phenolic compounds obtained from blueberries have gained great attention due to their more effective bioactive roles in human health than those of whole berries. However, they are sensitive to environmental conditions and are therefore susceptible to degradation affecting their effectiveness. The microencapsulation of these compounds by spray drying provides a solution to these problems. This work aimed to study the effect of spray drying on the microencapsulation of the blueberry phenolic compounds to optimize the production of a powder rich in stable polyphenols. The phenolic extract from blueberries was spray dried under different conditions of inlet air temperatures (140 and 160 °C) and encapsulating agent concentrations (20 and 30% w/v), using maltodextrin (14.7 dextrose equivalent). The drying yield, moisture content, water-solubility, total and surface phenolic content, and encapsulation efficiency of total phenolic were investigated. The results obtained showed that the different conditions evaluated influenced the drying yield, moisture content, surface phenolic content, and encapsulation efficiency of phenolic compounds. In this sense, the powders with the best characteristics were obtained with 30% w/v of maltodextrin at 160 °C inlet temperature. These powders, rich in blueberry polyphenols stabilized by microencapsulation, are easier to handle for application, so they could be used as functional food ingredients.


2018 ◽  
Vol 24 (2) ◽  
pp. 93-100
Author(s):  
Le Quoc ◽  
Nguyen Muoi

Polyphenol is a valuable compound found in plants. Unfortunately, it is quite sensitive to heat, light and oxygen in the air. This is a disadvantage making the storage of these compounds for longer periods of time difficult. However, this problem can be overcome by encapsulation with carrier agents as maltodextrin, gum arabic, modified starch, etc. The efficiency of maltodextrin (MD, DE16-19) and gum arabic (GA) on spray drying of Polygonum multiflorum Thunb. root extract was investigated. The incorporation of gum arabic to the extract had the total polyphenol content (TPC) and antioxidant capacity (AC) higher than maltodextrin. The obtained powders from gum arabic and maltodextrin were analyzed for encapsulation yield, moisture content, color parameters, total phenolic content, antioxidant capacity, bulk density, wettability, hygroscopicity, water solubility index, particle size and microstructure. The results showed the types of carrier agents which significantly affected the physicochemical properties of powders produced by spray drying.


Beverages ◽  
2018 ◽  
Vol 4 (4) ◽  
pp. 84 ◽  
Author(s):  
Tuyet T.A. Tran ◽  
Ha V.H. Nguyen

This research was conducted to identify influences of spray-drying temperatures and carriers on physical and antioxidant properties of lemongrass leaf extract powder. Two variables including: inlet temperatures (110 °C, 120 °C, 130 °C, 140 °C and 150 °C) and carriers (Gum Arabic, Maltodextrin and Gum Arabic: Maltodextrin mixture) were studied. Loose density, moisture content, solubility, total phenolic content (TPC), total flavonoid content (TFC) and antioxidant capacity of the obtained powder were analyzed. Overall, moisture content, TPC and TFC were reduced; however, loose density, solubility and antioxidant capacity were enhanced when temperature increased. Among all powder samples, the one produced at 110 °C had the highest TPC (3.02 mg GAE/100 g DW) and TFC (541.82 mg CE/100 g DW) compared to the others. However, due to high moisture content, which is not suitable for the shelf life of powder product, this condition cannot be recommended as a favorable condition for lemongrass powder manufacturing. The powder samples produced by mixing with Maltodextrin at 130 °C retained the high levels of antioxidant capacity, TFC, TPC and had the highest water-soluble ability and lowest moisture content as compared to the others, matching well with quality requirements for an instant powder product.


2021 ◽  
Vol 12 (1) ◽  
pp. 39-52
Author(s):  
Rianita Pramitasari ◽  
Lidwina Krisna Chrysanti

Shallot is widely used in culinary purpose. However, the use of shallot produces a lot of waste. Shallot skin contains anthocyanin, which has antioxidant activity. This study aimed to evaluate different solvents and extraction times for anthocyanin extraction from shallot skin, to evaluate different drying methods, and to evaluate the physicochemical properties of the anthocyanin powder. Chemical tests were conducted before and after drying, including total anthocyanin content, antioxidant activity using DPPH, total phenolic, and total flavonoid content. Physical tests were undertaken only after drying, including moisture content, water activity, viscosity, solubility, and colour. Extraction with citric acid solvent in 72h extract resulted in the highest total anthocyanin than water and acetic acid solvent. After drying, the highest total anthocyanin was obtained from foam mat drying method, which extracted using citric acid solvent. While antioxidant activity was not significantly differenced among samples. Physical test for the powders showed low moisture content and water activity, red colour index, as well as suitable viscosity and solubility results. In conclusion, anthocyanin powder from shallot skin has a potent as a functional antioxidant ingredient that can be applied in beverage products.


2021 ◽  
Vol 13 (14) ◽  
pp. 8060
Author(s):  
Mehmet Ramazan Bozhuyuk ◽  
Sezai Ercisli ◽  
Neva Karatas ◽  
Halina Ekiert ◽  
Hosam O. Elansary ◽  
...  

The Rosa is one of the most diverse genera in the plant kingdom and, in particular, its fruits have been used for multiple purposes in different parts of the world for centuries. Within the genus, Rosa canina and Rosa dumalis are, economically, the most important species and dominate Rosa fruit production. In this study, some important fruit and shrub traits of ten Rosa canina and ten Rosa dumalis ecotypes collected from rural areas of Kars province, located in the east Anatolia region of Turkey were investigated. We found significant differences among ecotypes in most of the morphological and biochemical traits. The ecotypes were found between 1446–2210 m altitude. Fruit weight and fruit flesh ratio ranged from 2.95 g to 4.72 g and 62.55% to 74.42%, respectively. SSC (Soluble Solid Content), Vitamin C, total phenolic, total flavonoid, total carotenoid, and total anthocyanin content of the ecotypes ranged from 16.9–22.7%, 430–690 mg per 100 g FW (fresh weight), 390–532 mg gallic acid equivalent per 100 g FW, 0.88–2.04 mg per g FW, 6.83–15.17 mg per g FW and 3.62–7.81 mg cyanidin-3-glucoside equivalent per kg, respectively. Antioxidant activity was determined to be between 19.7–34.7 mg ascorbic acid equivalent per g fresh weight. Rosa ecotypes contained chlorogenic acid and rutin the most as phenolic compound. Our results indicated great diversity within both R. canina and R. dumalis fruits.


Foods ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 466
Author(s):  
María Guerra-Valle ◽  
Siegried Lillo-Perez ◽  
Guillermo Petzold ◽  
Patricio Orellana-Palma

This work studied the effects of centrifugal block freeze crystallization (CBFC) on physicochemical parameters, total phenolic compound content (TPCC), antioxidant activity (AA), and process parameters applied to fresh murta and arrayan juices. In the last cycle, for fresh murta and arrayan juices, the total soluble solids (TSS) showed values close to 48 and 54 Brix, and TPCC exhibited values of approximately 20 and 66 mg gallic acid equivalents/100 grams dry matter (d.m.) for total polyphenol content, 13 and 25 mg cyanidin-3-glucoside equivalents/100 grams d.m. for total anthocyanin content, and 9 and 17 mg quercetin equivalents/100 grams d.m. for total flavonoid content, respectively. Moreover, the TPCC retention indicated values over 78% for murta juice, and 82% for arrayan juice. Similarly, the AA presented an increase over 2.1 times in relation to the correspondent initial AA value. Thus, the process parameters values were between 69% and 85% for efficiency, 70% and 88% for percentage of concentrate, and 0.72% and 0.88 (kg solutes/kg initial solutes) for solute yield. Therefore, this work provides insight about CBFC on valuable properties in fresh Patagonian berries juices, for future applications in health and industrial scale.


2018 ◽  
Vol 46 (1) ◽  
pp. 128-133 ◽  
Author(s):  
Ferit CELIK ◽  
Mehmet Ramazan BOZHUYUK ◽  
Sezai ERCISLI ◽  
Muttalip GUNDOGDU

In present study, fruit weight, fruit firmness, external fruit color, soluble solid content, pH, titratable acidity, vitamin C, total phenolics, total anthocyanins, and antioxidant capacity of eight wild bilberry grown in Coruh valley in northeastern Turkey were determined. The blueberry cv. ‘Bluecrop’ is also included study to make comparison with bilberry genotypes. Antioxidant activity of bilberry and blueberry fruits were comparatively assessed by FRAP (Ferric reducing antioxidant power) assay. Significantly higher content of phenolics and anthocyanins was found in bilberry fruits than in blueberry fruits. However blueberry cv. ‘Bluecrop’ exhibited higher fruit weight and vitamin C content than bilberry fruits. Total phenolic and total anthocyanin content was 327 mg gallic acid equivalent and 142 mg of cyanidin-3-glucoside equivalent in 100 g fresh fruit in cv. ‘Bluecrop’ while it was between 492-563 mg gallic acid equaivalent and 307-342 mg of cyanidin-3-glucoside equivalent in 100 g fresh fruits of  bilberry accessions. Moreover, wild accessions approximately had 2-3 folds higher antioxidant capacity than cv. ‘Bluecrop’. Results suggest the possibility of improving the bioactive and antioxidant properties of bilberry cultivars based food products by using wild ones in cross breeding. It was also concluded that genotypes significantly affect their bioactive content and consequently the possibility of using wild bilberry fruits as a potential source of natural antioxidants in food industry.


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