Physico-chemical evaluation of red-fleshed dragon fruit (Hylocereus polyrhizus Britton and Rose) as influenced by potassium fertilization

2021 ◽  
pp. 323-328
Author(s):  
J.N. Magallanes ◽  
A.B. Gonzaga ◽  
N.R. Gonzaga
Keyword(s):  
Chemical Evaluation ◽  
Potassium Fertilization ◽  
Physico Chemical ◽  
Dragon Fruit ◽  
Hylocereus Polyrhizus

Effect of Drum Drying on Physico-chemical Characteristics of Dragon Fruit Peel (Hylocereus polyrhizus)

2015 ◽  
Vol 11 (2) ◽  
pp. 285-293 ◽  
Author(s):  
S.L. Chia ◽  
G.H. Chong
Keyword(s):  
Functional Properties ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Fruit Peel ◽  
Fresh Sample ◽  
Drum Drying ◽  
Physico Chemical ◽  
Dragon Fruit ◽  
Hylocereus Polyrhizus

Abstract Dragon fruit (Hylocereus polyrhizus) peel is high in antioxidants and fiber; however, it is discarded during processing. In this study, changes in physico-chemical properties of dragon fruit peel after drum drying were determined. Ground dragon fruit peel was drum dried at 1 rpm with 2 bar steam pressure, then analyzed for physical, chemical and functional properties. The betacyanin content was twofold higher in drum-dried powder (41.55 mg/g dm) than in a fresh sample (80.21 mg/g dm), yet up to 98.62% of the total phenolic content was retained with a 3.328 mg trolox/g dm reduction in the radical scavenging activity. The density of the powder was 0.1315 g/mL with 51.44% soluble in water. The functional properties determined included water holding capacity (2.523 g water/g sample), oil holding capacity (3.565 g oil/g sample) and swelling capacity (6.233 mL/g). The results of this study indicate that drum-dried dragon fruit peel can be considered to contain potentially functional ingredients.

scholarly journals Physico-chemical evaluation of Rosmarinus officinalis L. essential oils

2005 ◽  
Vol 48 (6) ◽  
pp. 1035-1039 ◽  
Author(s):  
Ana Cristina Atti-Santos ◽  
Marcelo Rossato ◽  
Gabriel Fernandes Pauletti ◽  
Luciana Duarte Rota ◽  
Juarez Ciro Rech ◽  
...  
Keyword(s):  
Steam Distillation ◽  
Optical Rotation ◽  
Volatile Oil ◽  
Rosmarinus Officinalis ◽  
Chemical Compositions ◽  
Chemical Parameters ◽  
Alpha Pinene ◽  
Chemical Evaluation ◽  
Physico Chemical ◽  
Rosmarinus Officinalis L

Nineteen samples of Rosmarinus officinalis were extracted by steam distillation in a pilot plant and evaluated in terms of chemical compositions and physico-chemical characteristics. The volatile oil yields ranged from 0.37% (1999 harvest) to 0.49% (1998 harvest). Twenty components were identified in the oils. The major components were alpha-pinene (40.55 to 45.10%), 1,8-cineole (17.40 to 19.35%), camphene (4.73 to 6.06%) and verbenone (2.32 to 3.86%). The physico-chemical parameters averaged 0.8887 g/cm³ for specific gravity, 1.4689 for refractive index, and +11.82° for optical rotation, and there were no significant variations in either the chemical or physico-chemical data in the different years.

scholarly journals Physico-Chemical Evaluation of Rationally Designed Melanins as Novel Nature-Inspired Radioprotectors

PLoS ONE ◽  
2009 ◽  
Vol 4 (9) ◽  
pp. e7229 ◽  
Author(s):  
Andrew D. Schweitzer ◽  
Robertha C. Howell ◽  
Zewei Jiang ◽  
Ruth A. Bryan ◽  
Gary Gerfen ◽  
...  
Keyword(s):  
Chemical Evaluation ◽  
Physico Chemical

scholarly journals Taxanes Hybrid Nanovectors: From Design to Physico-Chemical Evaluation of Docetaxel and Paclitaxel Gold (III)-PEGylated Complex Nanocarriers

2017 ◽  
Vol 35 (2) ◽  
pp. 1700299 ◽  
Author(s):  
Gwendolyn Marguerit ◽  
Hanane Moustaoui ◽  
Maroua Ben Haddada ◽  
Nadia Djaker ◽  
Marc Lamy de la Chapelle ◽  
...  
Keyword(s):  
Chemical Evaluation ◽  
Physico Chemical

scholarly journals ANTIOXIDANT ACTIVITY OF RED DRAGON FRUIT PEEL (HYLOCEREUS POLYRHIZUS (F.A.C. WEBER) BRITTON AND ROSE) ISOLATES USING 2,2-DIPHENYL-1-PICRYLHYDRAZYL METHOD

2018 ◽  
Vol 11 (1) ◽  
pp. 124 ◽  
Author(s):  
Sri Wahdaningsih ◽  
Subagus Wahyuono ◽  
Sugeng Riyanto ◽  
Retno Murwanti
Keyword(s):  
Antioxidant Activity ◽  
Liquid Chromatography ◽  
Medicinal Plants ◽  
Thin Layer ◽  
Preparative Thin Layer Chromatography ◽  
Fruit Peel ◽  
Dragon Fruit ◽  
Vacuum Liquid Chromatography ◽  
Layer Chromatography ◽  
Hylocereus Polyrhizus

  Objective: Indonesia is a country which has various natural resources including medicinal plants. Among the plants, red dragon fruit is interesting to be studied. In this study, antioxidant activity of red dragon fruit peel (Hylocereus polyrhizus (F.A.C. Weber) Britton and Rose) isolate was tested using 2,2-diphenyl-1-picrylhydrazyl method.Methods: Isolation of active compounds was performed through the application of vacuum liquid chromatography and preparative thin-layer chromatography (TLC). Antioxidant activity was tested using both TLC and spectrophotometry.Result: Results revealed that the values of IC50 of isolate 1 and 2 were 2.952, 14 μg/mL and 25.635,95 μg/mL, respectively.Conclusion: Isolate of dragon fruit has antioxidant activity. The compound which results in antioxidant activity is terpenoid and steroid.

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