scholarly journals Analisa Kadar Vitamin C Mangga Podang (Mangifera indica L.) pada berbagai Tingkat Kematangan dengan Metode Spektroskopi UV-VIS

Author(s):  
Tri ana Mulyati
Keyword(s):  

Vitamin C atau juga dikenal dengan asam askorbat merupakan senyawa kompleks yang dibutuhkan oleh tubuh serta berfungsi sebagai katalis dalam rekasi kimia dalam tubuh. Salah satu jenis buah yang banyak mengandung vitamin C serta disukai oleh masyarakat adalah buah mangga podang. Umumnya vitamin C akan meningkat seiring bertambahnya tingkat kematangan buah, dan akan menurun setelah buat terlewat matang. Tujuan dari penelitian ini adalah menganalisa kadar vitamin C mangga podang (Mangifera indica L.) pada berbagai tingkat kematangan buah, yaitu mentah, setengah matang, matang dan kelewat matang. . Adapun metode yang digunakan pada penelitian ini adalah spesktroskopi UV-VIS. Berdasarkan hasil penelitian, maka dapat disimpulkan bahwa tingkat kematangan buah mangga podang (Mangifera indica L.) dapat mempengaruhi kadar vitamin C. Semakin tinggi tingkat kematangan buah mangga maka kadar vitamin C akan semakin menurun. kadar vitamin C tertinggi di dapatkan pada mangga podang mentah (52,10 ± 0,48 mg/100 gr), sedangkan kadar vitamin C terendah di dapatkan pada mangga podang kelewat matang (19,59 ± 0,59 mg/100 gr).Kata kunci :Vitamin C, Mangga Podang, Tingkat Kematangan, Spektroskopi UV-Vis

2021 ◽  
pp. 1-9
Author(s):  
Mabintou Diomande ◽  
Kouassi Hubert Konan ◽  
Yapo Thierry Monnet ◽  
Jaures Oscar Gbotognon ◽  
Kouassi Armand Kanga ◽  
...  

Mango almond and peel flours are a potential source of nutriment. In this study, the proximate composition and mineral element profile of four varieties of mango flour that are grown and processing in north of Cote d’Ivoire investigated. The data can be used as a reference when these flours are used for further processing in a variety of products. The peels and almonds were harvested fresh, dried in an oven at 50°C for 72 hours, ground and analysed according to standard procedures. Results showed carbohydrate, crude protein, total lipid, crude fibre, ash contents and vitamin C of the couple “peel – almond” flours were found to be 83.83-76.16%, 2.48-6.54%, 2.79-13.45%, 9.97-7.67%, 4.25-3.10% and a considerable amount of vitamin C of 307.67–304.85 mg/100g, respectively. They also contained important minerals such as calcium at 1204.45-1064.82 mg/100g, magnesium at 257.46-243.81 mg/100g, and potassium was the major at 1883.65-1617.66 mg/100g, regarding peels and almonds flours, respectively. Mangoes varieties such as Amelie, Kent, Keitt and Brooks have the potential to be a good source of nutrition for humans and animals. Mangoes varieties, peels, almonds, biochemical parameters, minerals.


2021 ◽  
Vol 8 (4) ◽  
Author(s):  
Hashini Imalsha Abeysuriya ◽  
Vajira P Bulugahapitiya ◽  
Loku Pullukkutige Jayatissa

Sri Lanka is a habitat of diverse fruit varieties; nevertheless 95% of them are underutilized by people due to unawareness of their nutritional values and health aspects, and hence become ‘minor fruits’. This study was aimed on revealing vitamin C, iron and antioxidant contents of 29 varieties of minor fruits (MFs) with the comparison of the same with three best commonly consumable fruits (CFs), namely Carica papaya, Mangifera indica and Psidium guajava. Ascorbic acid (Asc), dehydroascorbic acid (DAsc), vitamin C (TC), phenolic (TP), flavonoid (TF), iron (Fe) contents and antioxidant capacities (AOCs) of fruits were determined using standard methods. The results of mean Asc, DAsc, TC, TP, TF and Fe contents in 100 gm of MFs ranged from 3.1 to 121.5 mg, 1.2 to 70.7 mg, 6.6 to 136.1 mg, 24.9 to 1613.3 mg Gallic acid equivalent, 6.2 to 228.0 mg Quercetin equivalents and 0.2 to 4.9 mg respectively. DPPH and Ferric Reducing Antioxidant Power (FRAP) assays were used for AOCs and variation of IC50 values in a DPPH assay was 1.2 to 245.4 mg/ml whereas FRAP values ranged from 9.6 to 486.7 ?mol FeSO4/gm. Among the studied minor fruits, Melastoma malabathricum (Maha bovitiya/ Malabar melastome) is found as the best respect to all considered parameters. As a conclusion, it can be stated that, the Sri Lankan minor fruits are good alternatives to the common fruits as they are recognized as good source of vitamin C, iron and higher content of antioxidants. As an outcome, Sri Lankan minor fruits can be promoted as alternatives to common fruits and as source of revenue for national economy.


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.


1956 ◽  
Vol 31 (1) ◽  
pp. 79-80 ◽  
Author(s):  
J. L. Spencer ◽  
M. P. Morris ◽  
W. C. Kennard
Keyword(s):  

1998 ◽  
Vol 4 (3) ◽  
pp. 199-205 ◽  
Author(s):  
A.R. Centurión Yah ◽  
S.A. González Novelo ◽  
J.A. Tamayo Cortés ◽  
J.J. Argumedo ◽  
E. Sauri Duch

Mango cv Kent, as grown on the Yucatan Peninsula, despite its satisfactory ripening, pleasant flavour, correct pulp colour and general acceptance, shows a skin without the characteristic red- yellow colour of the regular ripe fruit; it remains green and this makes it slightly unattractive to the consumer. On the other hand, ethylene and some other components such as Ethephon, have been used to homogenize the ripening in many fruits and to improve its colour. This work shows the results of the effect of nine different treatments with Ethephon on the colour, composition and quality of mango cv Kent. Fruit was treated by immersion in solutions of Ethephon at three different concentrations (500, 1500 and 2000 ppm) and for three different lengths of times (3, 6 and 9 min). The colour improvement depended upon the concentration and time of the treatment with Ethephon. In general, it was found that treatment with Ethephon had a significantly posi tive effect on the colour of the mango skin, as it caused the degradation of chlorophyll, which gave the appearance of the characteristic yellow and red colours to 100% of the fruit treated with 2500 ppm. Treatments influenced significantly the chemical composition of the pulp, particularly the concentration of total soluble solids, reducing sugars, carotenoids, vitamin C and acidity. The best sensorial acceptance was obtained from treatments with 1500 ppm.


2021 ◽  
Vol 17 (3) ◽  
pp. 165
Author(s):  
Wisnu Broto ◽  
Sari Intan Kailaku ◽  
Irpan Badrul Jamal ◽  
Rahmawati Nurjanah ◽  
Enrico Syaifullah

<p class="Abstrak">Mangga (<em>Mangifera indica, </em>L.) cv. Gedong merupakan salah satu kultivar unggulan Jawa Barat,dengan daya saing tinggi di pasar domestik dan internasional. Sulitnya mendapatkan kematangan serempak merupakan tantangan yang harus diatasi dengan teknologi pascapanen yang tepat. Penggunaan karbit sebagai pemacu kematangan buah tidak lagi dianjurkan dan perlu diganti dengan bahan lainya seperti etilen. Penelitian ini bertujuan untuk mendapatkan konsentrasi gas etilen dan lama paparan serta kondisi pemeraman terbaik untuk menghasilkan buah mangga Gedong matang sempurna dengan mutu yang baik.   Penelitian dilakukan dengan Rancangan Acak Lengkap Faktorial. Perlakuan yang diterapkan adalah konsentrasi gas etilen (0, 30, 60 dan 90 ppm) selama 24 jam pada kondisi <em>ambient </em>dan dalam ruangan berpendingin (AC).   Hasil penelitian  menunjukkan bahwa,  perlakuan  terbaik  untuk  mendapatkan  mangga  cv.  Gedong matang sempurna dengan mutu yang baik yaitu penggunaan etilen 30 ppm. Dengan perlakuan tersebut kematangan buah mangga tercapai 2 hari pada suhu berpendingin dan 4 hari   pada kondisi <em>ambient  </em>lebih cepat dibandingkan mangga tanpa paparan gas etilen. Suhu ruangan pemeraman lebih berpengaruh terhadap mutu buah mangga Gedong matang yang dihasilkan. Pemeraman dengan gas etilen meningkatkan kadar TPT (89,55%), vitamin C (71,31%), dan total fenol (167,23%) serta menurunkan total asam (92,62%) dan  total flavonoid (71,67%) dari buah mangga Gedong matang.  Konsentrasi gas etilen tidak berpengaruh terhadap kadar air, TPT, total asam dan vitamin C pada buah mangga Gedong matang hasil pemeraman. Gas etilen tidak menyebabkan penurunan mutu berdasarkan parameter fisikokimia yang diamati.</p><p class="Abstrak"> </p><p class="Abstrak"><strong>Ripening of Mango (<em>Mangifera Indika </em>L.) CV. Gedong Using Ethylene Gas</strong></p><p class="Abstrak">Mango (<em>Mangifera indica,</em> L.) CV. Gedong is one of the leading cultivars in West Java, with high competitiveness in the domestic and international markets. The difficulty of obtaining simultaneous ripe fruits is a challenge that must be overcome with the right postharvest technology. The use of carbide as a ripening booster is no longer recommended and needs to be replaced with ethylene gas which has been practiced internationally. This study aims to obtain the best ethylene gas concentration and exposure time and ripening conditions to produce perfectly  ripe  Gedong  mangoes  with  good  quality.  The  research  was  conducted  with  a completely randomized factorial design. The treatment applied was the concentration of ethylene gas (0, 30, 60 and 90 ppm) for 24 hours in ambient conditions and in an air conditioned room. The results showed that, the concentration of 30 ppm ethylene gas was the best treatment to produce fully ripe mangos with good quality, where maturity was obtained 2 days (air-conditioned room) to 4 (ambient condition) days earlier compared to those without ethylene gas exposure. The temperature of the ripening room has more effect on the quality of the ripe Gedong mango produced. Ripening with ethylene gas increased levels of TPT (89.55%), vitamin C (71.31%), and total phenols (167,23%) and decreased total acid (92.62%) and total flavonoids (71.67%) from ripe Gedong mangoes. Ethylene gas concentration had no effect on water content, TPT total acid and vitamin C in ripened mango Gedong. Ethylene gas did not cause deterioration based on observed physicochemical parameters.</p><p> </p>


Polymers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 3430
Author(s):  
Thi Minh Phuong Ngo ◽  
Thanh Hoi Nguyen ◽  
Thi Mong Quyen Dang ◽  
Thi Van Thanh Do ◽  
Alissara Reungsang ◽  
...  

The aim of extending shelf-life and maintaining quality is one of the major issues regarding mango fruit preservation. The quality of mango fruits is greatly affected by postharvest factors, especially temperature and fruit treatment. In this study, the effect of coating and storage temperature on the characteristics of mango fruits was investigated. The mango fruits were immersed in different concentrations (1.5%, 2.0%, and 2.5%) of pectin/nanochitosan dispersion (with ratios of pectin:nanochitosan 50:50), and (0.75%, 1% and 1.25%) of nanochitosan dispersion and stored at 17, 25, and 32 °C for 24 days. Changes in fruit, including weight loss, firmness, color, chemical composition (such as the total soluble solids concentration (TSS)), total sugar, reducing sugar, titratable acidity (TA), and vitamin C were periodically recorded. The results indicated that the pectin/nanochitosan coating significantly prevented reductions in the fruit weight, firmness, TSS, TA, and vitamin C content. Additionally, pectin/nanochitosan at a low temperature (17 °C) had a greater positive effect on fruit shelf-life and weight maintenance than 25 and 32 °C. The coated mango fruits maintained good quality for 24 days at 17 °C, while coated fruits stored at 25 °C and 32 °C, as well as uncoated ones stored at 17 °C, were destroyed after two weeks. At the maximum storage time evaluated, the coating formulations containing pectin and nanochitosan exhibited microbial counts below the storage life limit of 106 CFU/g of fruit. In general, the results showed that the pectin/nanochitosan coating (2%) with a storage temperature of 17 °C is the most effective strategy for improving quality and extending the shelf-life of mango fruits.


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.


2020 ◽  
Vol 2 (1) ◽  
pp. 111-115
Author(s):  
Alinta Ayuningtyas
Keyword(s):  

Penggunaan obat-obatan tradisional seperti tanaman sudah dilakukan secara turun temurun untuk menyembuhkan berbagai penyakit. Salah satunya adalah penggunaan mangga (Mangifera indica) dan madu sebagai obat untuk menyembuhkan luka. Madu dengan komponen antimicrobial dan antioksidan yang mampu menyembuhkan luka. Madu juga dapat memberikan efek lapisan protektif dan menjaga kelembaban sehingga bakteri tidak dapat berkembang. Mangga mengandung mangiferin yang merupakan komponen yang dapat menyembuhkan luka dengan adanya vitamin A dan vitamin C yang penting dalam proses pembentukan kolagen dan jaringan ikat sehingga terjadi penyembuhan luka. Penggunaan campuran madu dan mangga diketahui dapat mempercepat proses penyembuhan luka dibandingkan jika digunakan secara terpisah


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