Effects of microwave and ultrasound treatment on vitamin C, polyphenols and antioxidant activity of mango (Mangifera indica) during low temperature drying

Author(s):  
Nguyen Thi Thanh Huong ◽  
PhamVan Thinh ◽  
Do Vinh Long ◽  
Huynh Bao Long ◽  
Ung Thanh Dat ◽  
...  
2020 ◽  
Vol 5 (2) ◽  
pp. 124-134
Author(s):  
Vina Juliana Anggraeni

Telah dilakukan uji antioksidan dan sitotoksik terhadap ekstrak n-heksana dan metanol daun mangga (Mangifera indica L.). Daun mangga diekstrak menggunakan metode maserasi bertingkat menggunakan 2 pelarut yang berbeda yaitu pelarut n-heksana dan metanol. Hasil maserasi dipekatkan kemudian diuji aktivitas antioksidan dan sitotoksiknya. Uji aktivitas antioksidan menggunakan metode spektrometri dengan pereaksi DPPH dan pembandingnya berupa vitamin C. Sedangkan untuk uji sitotoksik menggunakan metode BLST. Hasil pengujian menunjukkan kedua ekstrak memiliki aktivitas antioksidan dan sitotoksik. Pada ekstrak metanol diperoleh IC50 sebesar 13,54 ppm dan LC50 sebesar 260,07 ppm. Sedangkan pada ekstrak n-heksana diperoleh IC50 sebesar 730,03  ppm dan LC50 sebesar 711,73 ppm. Untuk standar DPPH menggunakan vitamin C dengan IC50 sebesar 5.13 ppm. Aktivitas antioksidan dan sitotoksik ekstrak metanol lebih kuat dibandingkan dengan esktrak n-heksana.


2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Dewi Andini Kunti Mulangsri ◽  
Aqnes Budiarti ◽  
Endah Novia Saputri

ABSTRAK Sistem antioksidan merupakan bagian dari sistem kekebalan tubuh yang mampu menghambat reaktifitas radikal bebas. Sumber alami antioksidan salah satunya adalah buah yaitu buah mangga Arumanis. Proses fraksinasi dengan pelarut dietileter dilakukan untuk menyari senyawa-senyawa yang bersifat semipolar yang diharapkan memiliki potensi sebagai antioksidan. Penelitian ini bertujuan untuk mengetahui aktivitas antioksidan fraksi dietil eter ekstrak etanol buah mangga arumanis (Mangifera indica L.) dengan Metode DPPH. Ekstraksi dilakukan dengan metode maserasi menggunakan pelarut etanol 70%, kemudian dipartisi cair-cair menggunakan pelarut dietil eter. Penentuan aktivitas antioksidan menggunakan metode DPPH dengan membuat seri konsentrasi fraksi dietil eter ekstrak etanol buah mangga Arumanis yaitu 12,5; 25; 50 dan 100ppm. Vitamin C digunakan sebagai larutan pembanding dengan seri konsentrasi 0,625; 1,25; 2,5 dan 5 ppm. Hasil penelitian menunjukkan bahwa fraksi dietil eter ekstrak etanol buah mangga arumanis memiliki aktivitas antioksidan dengan nilai IC50 sebesar 75,22 ppm dan 1,18 ppm untuk Vitamin C. Fraksi dietileter ekstrak etanol buah mangga Arumanis memiliki potensi lemah sebagai antioksidan jika dibandingkan dengan Vitamin C. Kata Kunci: antioksidan, fraksi dietileter, buah mangga arumanis, Mangifera indica, DPPH ABSTRACT Antioxidant systems are part of the immune system which is able to inhibit the reactivity of free radical. Source of natural antioxidants is a fruit that is mango Arumanis. Process of fractionation with solvent diethylether to extraction the compounds semipolar and expected to have potential as antioxidants. This study aims to determine the antioxidant activity of diethyl ether fraction of ethanol extract Arumanis mango (Mangifera indica L.) with DPPH method. Extraction used ethanol 70% by maceration method, then partitioned using a liquid-liquid partition with diethylether as a solvent. Determination of antioxidant activity using DPPH method with a series of concentrations of diethyl ether fraction of ethanol extract Arumanis mango ie 12.5; 25; 50 and 100ppm. Vitamin C used as a reference solution with a concentration series of 0,625; 1.25; 2.5 and 5 ppm. The results showed that the diethyl ether fraction of ethanol extract Arumanis mango have antioxidant activity with IC50 value of 7.22 ppm and 1.18 ppm for Vitamin C. Diethylether fraction of ethanol extract Arumanis mango has weak potential as a antioxidant, if compared with Vitamin C. Keywords: Antioxidants, diethylether fractions, arumanis mango fruit, Mangifera indica, DPPH.


Food Research ◽  
2021 ◽  
Vol 5 (5) ◽  
pp. 145-148
Author(s):  
R. Rompies ◽  
N. Mayulu ◽  
F. Nurkolis ◽  
B.J. Kepel ◽  
H. Natanael ◽  
...  

Mango (Mangifera indica) and pineapple (Ananas Comosus) are tropical fruits that contain many nutrients, one of which is antioxidants and polyphenols. Lots of studies have shown that fermented fruit is higher in antioxidants and health benefits. Antioxidants have been reported to be an alternative to enhance body immunity and possibly become an Anti -SARS-CoV-2. One of the antioxidants that are easily found in vitamin C. This study is to process the fermented mango and pineapple fruits into cookies and to test the antioxidant content (especially Vitamin C) in vitro. There were three variations of the formulation, mango: pineapple: CO2 free water. Sample 1 (1: 0.5: 0.5), sample 2 (2: 1: 1) and sample 3 (3: 2: 2). Then, all product samples were inoculated with Lactobacillus paracasei 5% b/v for 14 days under anaerobic conditions to get simpler mangoes and pineapple food fibre. The fermented products were made into flour with a freeze dryer. Sample variation is done to determine the average significance of the antioxidant content in it. The next step was Vitamin C analysis from 3 samples of cookies sample using Titration Iodometric Method, to determine the amount of Vitamin C (mg/100 g) and also the antioxidant activity with 2,2-diphenyl-1-picrylhydrazyl (DPPH). The amount of vitamin C obtained in Sample 1 was 100.20 mg/100 g respectively with antioxidant activity is 35.33%. Sample 2 was 95.75 mg/100 g respectively with antioxidant activity is 30.60%. Sample 3 was 107.90 mg/100 g respectively with antioxidant activity is 44.70%. The formulation with the highest amount of cookies sample containing vitamin C is S3. There was a significant difference (P<0.05) that determined vitamin C levels between sample formulations. The mean ash content of the three samples was 2.02±0.04% and water content were 1.60± 0.15%. The average vitamin C levels in the three sample cookies were 101.28±6.14 mg/100 g. Sample 3 indicated the best antioxidant activity towards 2,2-diphenyl-1- picrylhydrazyl (DPPH) in the amount of 44.70%. Therefore, fermented mango and pineapple have a great potential to be developed into healthy snack cookies. The vitamin C and antioxidants content in cookies from the fermentation of mango and pineapple may be a great substitute for snacks since antioxidants has the ability to improve immunity and anti-inflammatory response. These cookies are also good prebiotics for the gut microbiome which plays a good role in the immune system.


HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 520e-520
Author(s):  
Juan E Manzano ◽  
Oswaldo Valor

Mango fruits `Criollo de Bocado' harvested at the mature-green stage were treated with a hydrothermic treatment of 55 °C for 3 min and stored for 20 days at temperatures of 10 ± 2, 15 ± 2 and 28 ± 2 °C. A randomized design 2 × 3 × 4 with three replications was used. Some chemical parameters were analyzed, such as total soluble solids content (% TSS), pH, tritatable acidity, and TSS/tritatable acidity ratio. TSS content increased with storage time at low temperature. The pH increased measurably with storage temperature, while tritatable acidity values results had inconsistent data.


Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3746
Author(s):  
Magdalena Polak-Śliwińska ◽  
Małgorzata Tańska

The benefits of natural honeybee products (e.g., honey, royal jelly, beeswax, propolis, beevenom and pollen) to the immune system are remarkable, and many of them are involved in the induction of antibody production, maturation of immune cells and stimulation of the immune system. The type of plants in the geographical area, climatic conditions and production method have a significantly influence on the nutritional quality of honey. However, this variability can influence consumer liking by the sensory attributes of the product. The aim of this work was to compare the most popular honeys from Poland in terms of nutritional value, organoleptic properties and antioxidant activity. In the study, five varieties of honey (honeydew, forest, buckwheat, linden and dandelion) from conventional and organic production methods were tested. The nutritional characteristics of honey samples included acidity, content of water, sugars, vitamin C, HMF and phenolics (total and flavonoids), while honey color, taste, aroma and consistency were investigated in the organoleptic characteristics. The antioxidant activity was determined in water- and ethanol-soluble honey extracts using DPPH and ORAC tests. The results showed that organoleptic and nutritional characteristics of popular Polish honeys differ significantly in relation to plant source and production method. The significant effect of honey variety on the content of HMF, saccharose and phenolics, as well as acidity and antioxidant capacity were noted. The impact of variety and variety × production method interaction was significant in the case of the content of vitamin C, glucose and fructose. A visible difference of buckwheat and forest honeys from other samples was observed. The highest content of total phenolics with antioxidant activity based on the SET mechanism was found in buckwheat honeys, while forest honeys were richer in flavonoids.


2021 ◽  
Vol 11 (8) ◽  
pp. 3634
Author(s):  
Teresa Leszczyńska ◽  
Barbara Piekło ◽  
Aneta Kopeć ◽  
Benno F. Zimmermann

This study compares the content of basic nutrients (proteins, fats, digestible carbohydrates, dietary fiber and ash), steviol glycosides, selected antioxidants (vitamin C, total polyphenols) and antioxidant activity in dried leaves of Stevia rebaudiana Bertoni cultivated in Poland, Paraguay and Brazil and available in the direct sale. The basic chemical composition was determined by standard AOAC (Association of Official Analytical Chemists) methods. Content of steviol glycosides was determined by the UHPLC-UV chromatographic method. Total polyphenols content was expressed as gallic acid equivalent (GAE) and catechins equivalent (CE). Antioxidant activity was measured as ABTS●+ free radical scavenging activity. Dried leaves of S. rebaudiana grown in Poland had significantly higher contents of dietary fiber, and lower protein and ash content, compared to those derived from Paraguay and Brazil. The former had, however, considerably higher contents of total steviol glycosides, stevioside and rebaudioside D, compared to the remaining two plants. In the Paraguay-derived dried leaves, the content of rebaudioside A, C, E and rubusoside was found to be significantly lower. Dried leaves of S. rebaudiana Bertoni, cultivated in Poland, contained substantially more vitamin C and a similar content of total polyphenols, compared to those from Brazil and Paraguay. The examined material from Brazil and Paraguay plantations showed similar antioxidant activity, while that obtained from Polish cultivation was characterized by a significantly lower value of this parameter.


Separations ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 94
Author(s):  
Anahí J. Borrás-Enríquez ◽  
Elizabeth Reyes-Ventura ◽  
Socorro J. Villanueva-Rodríguez ◽  
Lorena Moreno-Vilet

Manililla is a mango variety whose residues contain bioactive compounds such as polyphenols and flavonoids, with high added value. The use of environmentally friendly extraction technology would be of great relevance; hence, this study aimed to evaluate the effect of solvent relation, sonication time and amplitude on the ultrasound-assisted extraction of total polyphenols in Manililla mango residues (peel, endocarp and kernel) and antioxidant activity. An experimental design 23 with a central point was used to evaluate the curvature behavior of the process variables. Conventional maceration was used as a control. The better conditions were obtained at the central point using 50% ethanol in water, 60% amplitude and 20 min of sonication time. We obtained values of up to 1814 mg GAE/100 g, 469 mg GAE/100 g and 672 mg GAE/100 g of total polyphenols and 1228 mg QE/100 g, 653 mg QE/100 g and 880 mg QE/100 g of total flavonoids for peel, endocarp and kernel, respectively. Mangiferin was quantified in ultrasound-assisted extraction at 150 mg/g in peel and 0.025 mg/g in the kernel, but it was not detectable in maceration. An antioxidant capacity of 87%, 14% and 83% inhibition for peel, endocarp and kernel, respectively, were obtained. Peel and kernel were the residues with higher potential as extraction material, while endocarp was not.


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