Interaction of Purple Sweet Potato Extract with Ascorbic Acid in FeCl3 Solution

Utilization of ascorbic acid as corrosion inhibitor has several weaknesses. These weaknesses are easy to oxidize in solution form and reduction of its antioxidant properties due to heat, light, oxidizing agent, dissolve oxygen, and heavy metals. Purple sweet potato extract is an alternative green corrosion inhibitor with major contains of anthocyanin compound. Anthocyanin will withstand enzymatic reaction and oxidation process of ascorbic acid. Addition of purple sweet potato extract in ascorbic acid will enhance inhibition efficiency of steel compare to the used of ascorbic acid alone. Interaction of purple sweet potato extract with 0.01M ascorbic acid in 0.1M FeCl3environment was analyzed using FTIR spectroscopy. The result shows that interaction of purple sweet potato extract with ascorbic acid in 0.1M FeCl3build ability to form iron chelate.

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Effects of Purple Sweet Potato Extract Addition in Ascorbic Acid Inhibitor to Corrosion Rate of API 5L Steel in 3.5%NaCl Environment

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.709.384 ◽

2014 ◽

Vol 709 ◽

pp. 384-389 ◽

Cited By ~ 2

Author(s):

Ayende ◽

Andi Rustandi ◽

Johny Wahyuadi Soedarsono ◽

Dedi Priadi ◽

Sulistijono ◽

...

Keyword(s):

Ascorbic Acid ◽

Corrosion Rate ◽

Corrosion Inhibitor ◽

Sweet Potato ◽

Ipomoea Batatas ◽

Enzyme Reaction ◽

Liquid Form ◽

Acid Inhibitor ◽

Potato Extract ◽

Purple Sweet Potato

Using vitamin C or ascorbic acid as corrosion inhibitor has several weakness. In its liquid form ascorbic acid is easily oxidized and its anti oxidant properties unstable due to heat, light, oxidizer, dissolved oxygen and heavy metals. Purple sweet potato (ipomoea batatas L) with its high anthocyanin is one of alternative for green corrosion inhibitor. Extract of purple sweet potato has the ability to hold the enzyme reaction and oxidation proses of ascorbic acid. Purple sweet potato extract mixed with ascorbid acid is used as inhibitor of API 5L steel in 3.5%NaCl. This compound is classifid as mixed type inhibitor. The adding of purple sweet potato extract will assist ascorbic acid to maintance its inhibition efficiency and increases surface layer corrosion resistant of steel. Polarization methods and electrocehmical impedance spectroscopy (EIS) are used to investigate corrosion rate and mechanism of the steel. Appliaction of 4 ml purple sweet potato mixed with 10-4M ascorbic acid inhibitor increases inhibition ability of API 5L steel from 23.5 to 57.52%. Purple sweet potato extract moves polarization curve to lower potential (below 82 mVolt) with tends to be more negative.

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Pengaruh Profilaksis Ekstrak Ubi Jalar Ungu (Ipomoea batatas L.) terhadap Kadar Malondialdehida Hepar Tikus Putih (Rattus norvegicus) Jantan Galur Wistar yang Diinduksi Karagenan

Hang Tuah Medical journal ◽

10.30649/htmj.v15i2.66 ◽

2018 ◽

Vol 15 (2) ◽

pp. 146

Author(s):

BRILIAN DINANTI ◽

FITRI HANDAJANI

Keyword(s):

Sweet Potato ◽

Ipomoea Batatas ◽

Wistar Rats ◽

Group Method ◽

Control Group ◽

Intraplantar Injection ◽

Significant Difference ◽

Male Wistar Rats ◽

Potato Extract ◽

Purple Sweet Potato

Liver is an organ with complex metabolism. When the liver is inflamed, cellular immunity will defend against inflammatory agents by stimulating immune cells to produce reactive oxygen species (ROS). Excessive ROS accumulation cause oxydative stress with increased liver malondialdehyde (MDA) level. Some researches showed that purple sweet potato contain flavonoids (anthocyanins) that functioned as antioxydants. This study aimed to show the prophylactic effect of purple sweet potato extract to the liver MDA level of male Wistar rats induced by carrageenan.This study used post-only control group method using 18 male Wistar rats divided into 3 groups: group of rats without treatment, group of rats induced by 0,1 ml of 1% carrageenan by intraplantar injection on day-8, and group of rats given with 872 mg/kgBW of purple sweet potato extract for 7 days and induced by 0,1 ml of 1% carrageenan. In the end of the study, the liver MDA levels were measured by Thio-Barbituric Acid method on each groups.The results of One-Way ANOVA test showed there was no significant difference (p = 0,290) between group of rats without treatment (x̅= 207,50) and group of rats induced by carrageenan (x̅=233,17). Then, there is no significant difference (p = 0.978) between group of rats induced by carrageenan and group of rats given with prophylactic purple sweet potato extract and induced by carrageenan (x̅= 232,50).The conclusion of this study is giving intraplantar injection of carrageenan can increase liver MDA level insignificantly and giving prophylactic purple sweet potato extract has an effect to decrease the liver MDA level of rats induced by carragenan insignificantly because it contains anthocyanins as antioxidants. Keywords: Liver, Ipomoea batatas L., Malondialdehyde, Anthocyanins

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The influence of addition of various sweet potatoes (Ipomea batatas) extract to total count of cells and antioxidant activity in yogurt

Biofarmasi Journal of Natural Product Biochemistry ◽

10.13057/biofar/f070202 ◽

2009 ◽

Vol 7 (2) ◽

pp. 68-76

Author(s):

RETNATI RETNATI ◽

M.A.M. ANDRIANI ◽

GUSTI FAUZA

Keyword(s):

Antioxidant Activity ◽

Sweet Potato ◽

Skim Milk ◽

Total Count ◽

Sweet Potatoes ◽

Fresh Milk ◽

Ipomea Batatas ◽

Significant Difference ◽

Potato Extract ◽

Purple Sweet Potato

Retnati, Andriani MAM, Fauza G. 2009. The influence of addition of various sweet potatoes (Ipomea batatas) extract to total count of cells and antioxidant activity in yogurt. Biofarmasi 7: 68-76. The aim of this research was to determine the influence of addition of various sweet potatoes extract to the total count of cells and the antioxidant activity in yogurt. Yogurt was made from fresh milk, skim milk, white sweet potato, orange sweet potato, purple sweet potato, and pure culture of Streptococcus thermophilus 0040 and Lactobacillus bulgaricus 0041 in straight MRS agar. Fresh milk, skim milk powder (5%, b/v), and sweet potato extract (10%, v/v) was pasteurized at 90oC for 15 minutes, cooled to the temperature between 40-45oC, inoculated with 2.5% S. thermophilus and L. bulgaricus with a proportion of 1.4:1, and then incubated at a temperature of 40oC for 15 hours. Yogurt without an addition of sweet potato extract was used as control. The parameters measured in this experiment were the total count of cells with TPC (Total Plate Count) method and the antioxidant activity with DPPH (2,2- diphenyl-1-picrylhydrazyl) method. Samples were taken at one hour interval to examine the total count of cells, while the antioxidant activity was collected at three hours interval. The result of each analysis was plotted into graphics which describing the relation of total bacteria and antioxidant activity with fermentation time. ANOVA was employed to analyze the data. If there was a significant difference, it should be followed by Duncan Multiple Range Test (DMRT) at a significance level Î±=0.05. The result of this research showed that the addition of various sweet potatoes extracts increased the total count of cells and the antioxidant activity in yogurt. The total count of cells showed no significant different for each sample, it meant that the different colors in sweet potato did not influence the total count of cells. However, yogurt with orange and purple sweet potato extract addition had a significant difference on the antioxidant activity with control and yogurt with white sweet potato extract. In conclusion, the difference colors in sweet potato influenced in the antioxidant activity in yogurt significantly. Sweet potato is potential for milk substitute in yogurt production due to oligosaccharide content and antioxidant activity.

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Pemanfaatan Lactobacillus plantarum 1 dan Pewarna Alami Berbahan Nabati Dalam Pembuatan Tapai Probiotik

Jurnal Teknologi dan Industri Pertanian Indonesia ◽

10.17969/jtipi.v12i1.15777 ◽

2020 ◽

Vol 12 (1) ◽

pp. 9-15

Author(s):

Yusmarini Yusmarini ◽

Shanti Fitriani ◽

Vonny Setiaries Johan ◽

Rahmayuni Rahmayuni ◽

Vita F. Artanti

Keyword(s):

Lactobacillus Plantarum ◽

Sweet Potato ◽

Ph Value ◽

Natural Dyes ◽

Sweet Potatoes ◽

Fruit Extract ◽

Narrow Leaf ◽

Dragon Fruit ◽

Potato Extract ◽

Purple Sweet Potato

Tapai is one of the typical Indonesian fermented products. This research utilized Lactobacillus plantarum 1 RN2-53 and natural dyes made from plants in the production of cassava tapai. The objectives of this research were to improve the quality of probiotic cassava tapai and to obtain the chemical, microbiological and sensory characteristics of the cassava tapai. Natural dyes used were purple sweet potato extract, red dragon fruit extract and narrow-leaf pleomele extract. The results showed that cassava tapai made with the addition of Lactobacillus plantarum 1 RN2-53 and the addition of natural dyes from plants had different chemical and microbiological characteristics. Tapai made with the addition of red dragon fruit extract generally had a lower pH value and a higher total titrated acid compared to tapai made with the addition of purple sweet potato extract and narrow-leaf pleomele extract, but the alcohol content of tapai made with the addition of purple sweet potatoes extract was higher than the others. The number of lactic acid bacteria was around 109 and had met the probiotic food criteria.

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Effect of purple sweet potato (Ipomoea batatas L) extract on malondialdehyde levels of male white rat (Rattus norvegicus Wistar strain) model of atherosclerosis

Journal of Public Health in Africa ◽

10.4081/jphia.2019.1187 ◽

2019 ◽

Author(s):

Meddy Setiawan ◽

Fakih Nadhil

Keyword(s):

Sweet Potato ◽

Rattus Norvegicus ◽

Ipomoea Batatas ◽

Control Treatment ◽

Control Group ◽

Experimental Animals ◽

Wistar Strain ◽

Potato Extract ◽

Purple Sweet Potato ◽

Strain Model

Cardiovascular disease is a disease caused by impaired functions of heart and blood vessel, one of those is coronary heart disease. This study aimed to identify the effect of purple sweet potato (Ipomoea batatas L) extract on MDA (Malondialdehyde) levels of male white rat (Rattus norvegicus Wistar strain) model of atherosclerosis. This research was an experimental study using Post-Test Only Control Group Design method, used 5 groups (positive control group, negative control, treatment 1, treatment 2, and treatment 3), each group contained 5 rats plus 2 reserve rats. ANOVA one way test obtained a significance of 0.00 (p <0.05). The regression test results showed the coefficient of determination R² = 0.71, which means a decrease in serum MDA levels of experimental animals is influenced by the dose of purple sweet potato extract administration as much as 71% while the remaining 29% can be influenced by factors outside the study. It can be concluded that purple sweet potato extract can affect serum MDA levels of experimental animals.

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Supplementation of Water Extract of Purple Sweet Potato (Ipomoeo Batatas L) in Improving the EEG Image, Decreasing the Seizure Frequency and Reducing the Frequency of Drugs Resistant of Focal Epilepsy in Children

Biomedical & Pharmacology Journal ◽

10.13005/bpj/1622 ◽

2019 ◽

Vol 12 (1) ◽

pp. 141-147

Author(s):

I. Gusti Ngurah Made Suwarba ◽

Soetjiningsih Soetjiningsih ◽

I. Made Bakta ◽

I. Made Jawi ◽

I. Dewa Made Sukrama ◽

...

Keyword(s):

Serum Level ◽

Sweet Potato ◽

Seizure Frequency ◽

Focal Epilepsy ◽

Water Extract ◽

Anticonvulsant Effect ◽

Drug Resistant ◽

Dependent Variables ◽

Potato Extract ◽

Purple Sweet Potato

The water extract of purple sweet potato contains of anthocyanin, a sub-class of flavonoid that has powerful antioxidant, antiinflammatory, and anticonvulsant effect. The aim of this study was to determine the effectiveness of supplementation of water extract of purple sweet potato towards recovery (remission) of drug resistant focal epilepsy (DRFE) in children with standard conventional antiepileptic medicine. It was found that the supplementation of purple sweet potato extract had a pure effect in improving all of the dependent variables, including decreased of the serum level of 8-OHdG by 1.611 pg/mL (p<0.001); decreased the serum level of IL-6 by 3.320 pg/mL (p<0.001); increased the total SOD serum level by 0.208 IU/mL (p=0.003); improved the EEG image (p=0.004); and decreased the seizure frequency at the end of the sixth week by 3.972 times (p<0.001), compared to the control. There is a significant effect on the use of supplementation of purple sweet potato extract in decreasing the serum level of 8-OHdG, decreasing the serum level of IL-6, increasing the total SOD serum level, improving the EEG image, decreasing the seizure frequency at the end of the sixth week, which at the end reducing the frequency of drugs resistant of focal epilepsy in children.

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Effect of Purple Sweet Potato Extract (Ipomoea batatas L) on Zebrafish (Danio rerio) By Diet Induced Obesity

Research Journal of Life Science ◽

10.21776/ub.rjls.2019.006.02.2 ◽

2019 ◽

Vol 6 (2) ◽

pp. 83-93

Author(s):

Aswaty Nur ◽

Yhusi Karina Riskawati ◽

Edwin Widodo ◽

Retty Ratnawati ◽

Amirah Firdausy ◽

...

Keyword(s):

Sweet Potato ◽

Danio Rerio ◽

Ipomoea Batatas ◽

Diet Induced Obesity ◽

Potato Extract ◽

Purple Sweet Potato

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Preliminary Study: Purple Sweet Potato Extract Seems to Be Superior to Increase the Migration of Impaired Endothelial Progenitor Cells Compared to l-Ascorbic Acid

Scientia Pharmaceutica ◽

10.3390/scipharm87030016 ◽

2019 ◽

Vol 87 (3) ◽

pp. 16

Author(s):

Yudi Her Oktaviono ◽

Makhyan Jibril Al-Farabi ◽

Luh Oliva Saraswati Suastika ◽

Febriyanti Hartono ◽

Yanni Dirgantara ◽

...

Keyword(s):

Ascorbic Acid ◽

Progenitor Cells ◽

Endothelial Progenitor Cells ◽

Sweet Potato ◽

Acid Treatment ◽

Endothelial Progenitor ◽

Treatment Dose ◽

Purple Sweet Potato ◽

And Migration ◽

Proliferation And Migration

Impairment of the endothelial progenitor cells (EPCs) ability to proliferate and migrate in the patients with coronary heart disease (CHD) is partly caused by oxidative stress. This research evaluates the effect of treatment with Ipomoea batatas L./purple sweet potato (PSP) extract and l-ascorbic acid on the proliferation and migration of impaired EPCs. EPCs were isolated from CHD patient’s peripheral blood. EPCs culture were cultivated and divided into control (untreated), PSP extract treatment (dose 1 and 25 μg/mL), and l-ascorbic acid treatment (dose 10 and 250 μg/mL) groups for 48 h. EPCs proliferation was analyzed with the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) cell proliferation assay, and migration was evaluated with the cell migration assay kit. Statistical tests were evaluated using SPSS 25.0. This research showed that EPCs proliferation and migration was significantly higher in all PSP extract and l-ascorbic acid treatment compared to the control (p < 0.001). EPCs migration on treatment with a PSP extract dose of 25 μg/mL was significantly higher compared to the treatment with l-ascorbic acid dose of 250 μg/mL (303,000 ± 1000 compared to 215,000 ± 3000 cells, p< 0.001). In conclusion, both treatments with PSP extract and l-ascorbic acid can improve the proliferation and migration of impaired EPCs. At the dose of 25 μg/mL, PSP extract seems to be superior to the l-ascorbic acid dose of 250 μg/mL to improve EPCs migration.

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APPLICATION OF ESSENTIAL OIL OF ARTEMISIA HERBA ALBA AS GREEN CORROSION INHIBITOR FOR STEEL IN 0.5 M H2SO4

Surface Review and Letters ◽

10.1142/s0218625x09012287 ◽

2009 ◽

Vol 16 (01) ◽

pp. 49-54 ◽

Cited By ~ 21

Author(s):

O. OUACHIKH ◽

A. BOUYANZER ◽

M. BOUKLAH ◽

J.-M. DESJOBERT ◽

J. COSTA ◽

...

Keyword(s):

Weight Loss ◽

Chemical Composition ◽

Adsorption Isotherm ◽

Essential Oil ◽

Corrosion Inhibitor ◽

Inhibition Efficiency ◽

Electrochemical Polarization ◽

Capillary Gc ◽

Green Corrosion Inhibitor ◽

Natural Oil

Essential oil from Artemisia herba alba (Art) was hydrodistilled and tested as corrosion inhibitor of steel in 0.5 M H 2 SO 4 using weight loss measurements and electrochemical polarization methods. Results gathered show that this natural oil reduced the corrosion rate by the cathodic action. Its inhibition efficiency attains the maximum (74%) at 1 g/L. The inhibition efficiency of Arm oil increases with the rise of temperature. The adsorption isotherm of natural product on the steel has been determined. A. herba alba essential oil was obtained by hydrodistillation and its chemical composition oil was investigated by capillary GC and GC/MS. The major components were chrysanthenone (30.6%) and camphor (24.4%).

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