scholarly journals PENETAPAN KADAR VITAMIN C PADA KULIT PISANG (Musa paradisiaca) DENGAN METODE SPEKTROFOTOMETRI UV-VISIBLE TAHUN 2018

2020 ◽  
Vol 2 (2) ◽  
pp. 56-62
Author(s):  
Asti Pratiwi ◽  
Ardita Febrianty Manurung ◽  
Jhoti Sumitra
Keyword(s):  
Vitamin C ◽  
The Body ◽  
Water Soluble ◽  
Banana Peel ◽  
Research Use ◽  
Musa Paradisiaca ◽  
Qualitative Test ◽  
Uv Visible ◽  
Research Stage

Background: Vitamin C is a vitamin that is water soluble qnd one vitamin that are needed by the body. To meet the intake of vitamin C needed source of vitamin a derived from fruits, one of which is banana. Part of the banana , which is still rarely used is its skin. Banana peel is very beneficial for health however the situation is only considered as waste that has not been utilized well. This study aims to determine the levels of vitamin C on the skin of the banana (Musa paradisiaca) by the method of spectrofotometry uv-visible wavelength 224,5 nm. Method: This research use experimental with purely research stage comprise sample preparation, qualitative test, making the solution of the parent raw, quantitative test, determination of wavelength of maximum vitamin and creation of calibration surve. Result: Based on the research that has been done obtained the result of the qualitative test to prove the presence of high content of vitamin C contained in banana peels, with the highest level obtained in the skin of the plantain by 0,0253 mg/ml and the levels of the lowest on a banana peel the wax by 0,0172 ng/ml. Discussion: Levels of vitamin C on the skin of the banana  barangan of 0, 0219 mg/ml, sample a banana skin banten by 0, 0173 mg/ml, sample a banana peel wax by 0, 0172 mg/ml and sample the skin of plantain by 0, 0253 mg/ml.

scholarly journals IDENTIFIKASI KADAR VITAMIN C PADA DAGING DAN KULIT BUAH NAGA MERAH (Hylocereus Polyrhizus) DENGAN METODE SPEKTROFOTOMETRI UV-VISIBLE

2019 ◽  
Vol 2 (1) ◽  
pp. 40-46
Author(s):  
Aminah Nur Syarifuddin ◽  
Rezky Zantrie ◽  
Romauli Anna Teresia Marbun
Keyword(s):  
Free Radicals ◽  
Vitamin C ◽  
Calibration Curve ◽  
Raw Materials ◽  
Quantitative Test ◽  
Dragon Fruit ◽  
Qualitative Test ◽  
Uv Visible ◽  
Hylocereus Polyrhizus

Introduction: Vitamin C is one of the nutrition acted as a antioxidants and effective addres free radicals can be destructive cells or tissue. Fruits are a source of vitamins C, which is a dragon red. Part of the dragon red during this rarely used is the skin. The dragon fruit is very useful to health, but in fact only thought of as waste farming has yet to be used as a good. This study aims to determine comparison levels of vitamin C on the flesh and the dragon red (Hylocereus polyrhizus) with a method spectrophotometry UV-Visible. Method: This type of research using the method of true experimental reseach stage includes preparation of samples, qualitative test,quantitative test, making the solution of the parent raw materials, determination of wavelength of vitamin C and manufacture of the calibration curve. The sample of this study is the flesh and the dragon red (Hylocereus polyrhizus). Results: Based on the results revealed that the fles and the dragon red (Hylocereus polyrhizus) contain vitamin C. Discussion: Levels of vitamin C on the flesh the dragon red of 0.05888 mg/mL and The levels of vitamin C on the skin the dragon red of 0.02533 mg/mL .

scholarly journals Analisis Senyawa β-Karoten pada Buah Pepaya (Carica papaya L.) Asal Kabupaten Konawe Selatan, Provinsi Sulawesi Tenggara

2021 ◽  
Vol 4 (2) ◽  
pp. 1-7
Author(s):  
Irman Idrus ◽  
Sabda Wahab ◽  
Andi Fitrah Nugraha ◽  
Syaiful Bachri
Keyword(s):  
Quantitative Analysis ◽  
The Body ◽  
Test Results ◽  
Carotene Content ◽  
Test Parameter ◽  
Qualitative Test ◽  
Uv Visible ◽  
Planting Method ◽  
Β Carotene

South Konawe District at Southeast Sulawesi Province is a producer of agriculture such as Papaya fruit ranging from 1168 quintals each year. Papaya fruit contains β-carotene which plays an important role in the formation of vitamin A in the body. This research was conducted to determine the β-carotene content of papaya fruit by using variables planting method, fruitage, and fruit condition. The mashed fruit was extracted using n-hexane: acetone: ethanol (2: 1: 1) v/v, then separated from polar and non-polar solutions. Qualitative analysis was carried out using the Carr-Price method and quantitative analysis or determination of β-carotene levels using the UV-Visible spectrophotometric method λ = 452.0 nm. The qualitative test results showed that the papaya fruit in the papaya fruit obtained by cultivation and growing wild with each variable half-ripe, ripe, and not fresh papaya identified the presence of β-carotene. The results of quantitative analysis of β-carotene levels in cultivated papaya fruit were 1.76 μL, half-ripe 1.32 μL, and cultivated young papaya 1.22 μL. In wild ripe papaya 1.75 μL, wild half-ripe papaya 1.3 μL and wild young papaya 1.21 μL. There is an effect of each test parameter starting from the parameters of planting method, fruitage, and fruit condition on β-carotene content in papaya fruit.

scholarly journals Role of Vitamin C (Ascorbic Acid) on Human Health- A Review

2005 ◽  
Vol 5 (8) ◽  
pp. 01-12
Author(s):  
Mary K Walingo ◽  
Keyword(s):  
Blood Pressure ◽  
Ascorbic Acid ◽  
Vitamin C ◽  
Human Health ◽  
The Body ◽  
Water Soluble ◽  
Plasma Vitamin ◽  
Risk Of Death ◽  
Increased Risk

Vitamin C, also known as ascorbic acid, abounds in nature and is highly labile. It is a water-soluble vitamin that is lost in large amounts during food processing. It is a vitamin whose prescribed requirement across cultures is not uniform. For example , the prescribed requirement of vitamin C in Great Britain is 30mg/day, while in the U.S.A., it is 60mg/day and 100mg/day in Japan. These variations are unusual and point to the need for further research to establish the acceptable RDAs for diverse populations. The RDA for vitamin C should be more than the amount needed to prevent the occurrence of disease. Vitamin C plays significant functions in the body that enhance its role in the health status of the human body. The biochemical functions of vitamin C include: stimulation of certain enzymes, collagen biosynthesis, hormonal activation, antioxidant, detoxification of histamine, phagocytic functions of leukocytes, formation of nitrosamine, and proline hydroxylation amongst others. These functions are related to the health effects of vitamin C status in an individual. In human health, vitamin C has been associated with reduction of incidence of cancer, blood pressure, immunity, and drug metabolism and urinary hydroxyproline excretion, tissue regeneration. This vitamin is needed for the proper metabolism of drugs in the body through adequate hepatic mixed function oxidase system. Epidemiological data have revealed the preventive and curative role of vitamin C on certain disease conditions in the body though controversies still persist. Vitamin C is effective in protecting against oxidative damage in tissues and also suppresses formation of carcinogens like nitrosamines. There is an inverse relationship with blood pressure and both plasma vitamin C and Vitamin C. Vitamin C has a lowering effect on blood pressure, especially on systolic pressure more than a diastolic pressure. Low levels of plasma vitamin C are associated with stroke and with an increased risk of all cause mortality. Increased consumption of ascorbic acid raises serum ascorbic levels and could decrease the risk of death.

scholarly journals Analisis Kadar Vitamin C Pada Daun Katuk (Sauropus Androgynus) Segar, Direbus dan Dikukus Dengan Metode Spektrofotometri UV-Vis

2019 ◽  
Vol 6 (01) ◽  
pp. 55-63
Author(s):  
Muhammad Hadi Sulhan Hadi Sulhan
Keyword(s):  
Vitamin C ◽  
The Body ◽  
Leafy Vegetable ◽  
Average Level ◽  
Green Leafy Vegetable

Katuk leaf (Sauropus Androgynus) is a kind of green leafy vegetable which has many benefits for the community, one of which is to treat heartburn, fever, earache, and yaws. Vitamins contained in Sauropus Androgynus and are useful for the body, one of which is vitamin C. Vitamin C has properties that are easily damaged against heat, and easily dissolve in water. This study aims to look at vitamin C levels in fresh, steamed and boiled Sauropus Androgynus by the UV-Vis Spectrophotometry method. Determination of vitamin C levels with this method is relatively inexpensive and good in accuracy. The results obtained with 30 samples with an average level of vitamin C in fresh Sauropus Androgynus 0.0036%, Sauropus Androgynus steamed 0, and Sauropus Androgynus boiled 0.0032%. It can be concluded that the vitamin C levels of boiled Sauropus Androgynus do not decrease significantly, compared to the levels of Vitamin C on freshSauropus Androgynus. the result is different from the Sauropus Androgynus that are steamed vitamin C levels become zero mg

scholarly journals The determination of vitamin C by means of its influence on the body weight of guinea-pigs

1936 ◽  
Vol 30 (9) ◽  
pp. 1719-1727 ◽  
Author(s):  
Katharine Hope Coward ◽  
Elsie Woodward Kassner
Keyword(s):  
Body Weight ◽  
Vitamin C ◽  
Guinea Pigs ◽  
The Body

scholarly journals Clinical efficacy and safety of oral and intravenous vitamin C use in patients with malignant diseases

2021 ◽  
Vol 147 (10) ◽  
pp. 3025-3042
Author(s):  
Catalina Hoppe ◽  
Maren Freuding ◽  
Jens Büntzel ◽  
Karsten Münstedt ◽  
Jutta Hübner
Keyword(s):  
Vitamin C ◽  
Intravenous Administration ◽  
Complementary Therapy ◽  
The Body ◽  
Water Soluble ◽  
Radical Scavenger ◽  
Positive Trend ◽  
Malignant Diseases ◽  
Efficacy And Safety ◽  
Group Comparisons

Abstract Background Vitamin C, also called ascorbic acid, is a water-soluble antioxidant and free radical scavenger. It is required in the body for numerous metabolic functions and is involved in the development of proteins and connective tissue. Methods In April 2020, a systematic search was carried out on five electronic databases (Medline, Embase, Cochrane, Cinahl, PsycINFO) to find studies on the use, efficacy and safety of a complementary therapy with vitamin C in oncological patients. Results Out of the initial 23,195 search results, 21 studies with 1961 patients were included in this review. Five of the included studies (n = 417) were randomized controlled trials (RCTs). The remaining 16 studies belonged to a lower class of evidence. The patients who were treated with vitamin C suffered from various malignant diseases, some in an advanced and palliative stage. Vitamin C was applied intravenously or orally. It was either the only treatment or was combined with chemo- or radiotherapy. Endpoints included the development of the disease-related symptoms, quality of life, mortality, progression-free survival and safety of vitamin C. The studies were of moderate quality and showed either no effect of vitamin C or a positive trend, although this has rarely been statistically proven in group comparisons. No or only slight side effects with both oral and intravenous administration of vitamin C were reported. Conclusion Oral intake of vitamin C does not appear to have any effect in patients with malignancies. Data are heterogeneous for intravenous administration. There are no RCTs with statistical group comparisons.

scholarly journals ROLE OF VITAMIN C IN TYPE 2 DIABETES MELLITUS CASES, A STUDY IN VEDANTA INSTITUTE OF MEDICAL SCIENCES

2019 ◽  
Vol 3 (11) ◽  
Author(s):  
Dr. Umesh Teltumbadr
Keyword(s):  
Placebo Group ◽  
Blood Glucose ◽  
Vitamin C ◽  
Blood Sugar ◽  
Statistical Significance ◽  
Glycated Haemoglobin ◽  
The Body ◽  
Water Soluble ◽  
Study Results

INTRODUCTION:  Diabetes is one of the largest emerging global health problem with 415 million people between the ages of 20 and 70 worldwide estimated as having diabetes in 2015 and Type 2 DM (T2DM) accounts for at least 90% of all cases of diabetes. Vitamin C is naturally present in fruit and vegetables, is often added as a preservative to foods/beverages, and is also used as a dietary supplement. As vitamin C is water-soluble, it has a relatively short half-life in the body due to rapid renal clearance and a regular and adequate intake is required to prevent deficiency. In T2DM patients Vitamin C levels are usually low as blood glucose may compete with vitamin C for uptake into cells due to its structural similarity to the oxidised form, and increased oxidative stress may deplete antioxidant stores. MATERIAL AND METHODS:  A total of 206 T2DM patients were included in the study and were divided randomly in to 2 groups of 103 each. Participant’s demographic and physical activity was noted. Anthropometric data including the body mass index (BMI) and waist and hip circumference were collected. Glycated haemoglobin (HbA1c) was determined in EDTA blood by standard methods. Fasting glucose was measured in blood collected in fluoride oxalate tubes. The vitamin C concentration of the processed samples was determined. Drug (Vitamin C and Placebo) was issued to patients for duration of thirty days at a time all patients were maintained on their usual dietary pattern while limiting their consumption of vitamin C-rich foods throughout the study. RESULTS: Mean age in Vitamin C group was 46.87 ± 6.77while in placebo group it was 42.11 ± 6.46. There were 56 male and 44 female in Vitamin C group. In Placebo group male and female were 60 and 40 respectively. No statistical significance was observed in both the group.At 12 weeks fasting blood sugar levels were decreased by -23.74± 2.74 in patients receiving Vitamin C while in placebo group reduction was -5.44± 3.77. Post meal blood sugar was reduced by -21.72± 2.45in vitamin C group while in placebo it was -8.11± 2.45.CONCLUSION:Supplementation of Vitamin C in T2DM patients can significantly reduce the blood glucose levels and HbA1C levels.

scholarly journals EXTRACTION AND QUANTITATIVE DETERMINATION OF ASCORBIC ACID FROM BANANA PEEL MUSA ACUMINATA ‘KEPOK’

2016 ◽  
Vol 17 (1) ◽  
pp. 103-114 ◽  
Author(s):  
Khairul Anwar Mohamad Said ◽  
Zainab Radzi ◽  
Ibrahim Yakub ◽  
Mohamed Afizal Mohamed Amin
Keyword(s):  
Ascorbic Acid ◽  
Vitamin C ◽  
Musa Acuminata ◽  
Banana Peel ◽  
Ultrasound Assisted Extraction ◽  
Redox Titration ◽  
Solid Ratio ◽  
Assisted Extraction ◽  
Ultrasound Assisted

This paper discusses the extraction of an antioxidant compound, which is ascorbic acid or vitamin C, from a banana peel using an ultrasound-assisted extraction (UAE) method. The type of banana used was Musa acuminata also known as “PisangKepok” in Malaysia. The investigation includes the effect of solvent/solid ratio (4.5, 5 g and 10  ml/g), sonication time (15, 30 and 45 mins) and temperature variation (30 , 45  and 60oC ) on the extraction of ascorbic acid compounds from the banana peel to determine the best or optimum condition of the operation. Out of all extract samples analyzed by redox titration method using iodine solution, it was found that the highest yield was 0.04939 ± 0.00080 mg that resulted from an extraction at 30oC for 15 mins with 5 ml/g solvent-to-solute ratio.KEYWORDS:  Musa acuminata; ultrasound-assisted extraction; vitamin C; redox titration

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