Effects of high hydrostatic pressure and soaking solution on proximate composition, polyphenols, anthocyanins, β-carotene, and antioxidant activity of white, orange, and purple fleshed sweet potato flour

2019 ◽  
Vol 26 (5) ◽  
pp. 388-402
Author(s):  
Muhammad Azeem ◽  
Tai-Hua Mu ◽  
Miao Zhang
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Hydrostatic Pressure ◽  
Sweet Potato ◽  
High Hydrostatic Pressure ◽  
Anthocyanin Content ◽  
Potato Flour ◽  
Total Anthocyanin ◽  
Sweet Potato Flour ◽  
Β Carotene

Effects of high hydrostatic pressure (100, 200, and 400 MPa) and soaking solution (citric acid, calcium chloride, ascorbic acid, and distilled water) on proximate composition, polyphenols, anthocyanins, β-carotene, and antioxidant activity of white, orange, and purple fleshed sweet potato flour were investigated. Total polyphenol content was increased in sweet potato flour of Jishu 98 (white) at 200 MPa with ascorbic acid and Pushu 32 (orange) at 0.1 MPa with ascorbic acid treatment (0.51 and 0.83 mg gallic acid equivalent/g dry weight, respectively), but was decreased in Xuzishu No. 3 (purple) in both high hydrostatic pressure and soaking solution treatments. Total anthocyanin content was declined in all treated sweet potato flour. Nevertheless, high hydrostatic pressure with citric acid, calcium chloride, and distilled water significantly increased the β-carotene content in Pushu 32. Correlation analysis between total polyphenol content, total anthocyanin content, and antioxidant activity suggested that polyphenols are the most pivotal antioxidant in sweet potato flour. High hydrostatic pressure and soaking solution treated sweet potato flour could be potentially utilized in food with acceptable nutritional values.

scholarly journals Pengembangan Hybrid Tepung Ubi Jalar Kaya Antioksidan

2019 ◽  
Vol 10 (2) ◽  
pp. 153
Author(s):  
Sefanadia Putri
Keyword(s):  
Antioxidant Activity ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Sweet Potato ◽  
Block Design ◽  
Acetobacter Xylinum ◽  
Potato Flour ◽  
Total Carbohydrate ◽  
Sweet Potato Flour ◽  
Purple Sweet Potato

<p>Sweet potato is one type of tubers found in Indonesia. <em>Hybrid</em> of sweet potato flour is obtained from the modification of the processing by fermentation using lactic acid bacteria. The purpose of this study was to determine the nutritional and antioxidant content of various types of <em>hybrid</em> sweet potato flour. This research is an experimental laboratory with a true-experiment design. The experiment was arranged in a complete randomized block design (RCB) with three replications. The treatments are 6 types of sweet potatoes which include purple sweet potato Var.Antin 1, purple sweet potato val.local, white sweet potato, orange sweet potato, Japanese purple sweet potato Var.Ayamurasaki and cilembu sweet potato. The study included the fermentation process using lactic acid bacteria (Acetobacter xylinum) addition concentration of 5%, siege, analysis of nutrient content (water, ash, protein, fat, fiber and carbohydrates) and antioxidant activity of various types of <em>hybrid</em> sweet potato flour. The results showed that various types of <em>hybrid</em> sweet potato flour significantly affect the nutritional content which includes water content, ash content, fat content, protein content, fiber content and total carbohydrate. The result of antioxidant activity in various types of <em>hybrid</em> sweet potato flour after fermentation treatment in a concentration of 5% Acetobacter xylinum ranged from 29,383-53.7929%. The lowest value obtained at cilembu <em>hybrid</em> sweet potato flour and the highest value was obtained from the Japanese <em>hybrid</em> sweet potato flour var.Ayamurasaki.</p>

scholarly journals Pengaruh Substitusi Tepung Ubi Jalar Ungu Terhadap Karakteristik Kue Kering

2018 ◽  
Vol 7 (1) ◽  
pp. 30-35
Author(s):  
Helen C.D. Tuhumury ◽  
La Ega ◽  
Nuram Keliobas
Keyword(s):  
Chemical Composition ◽  
Experimental Design ◽  
Sweet Potato ◽  
Wheat Flour ◽  
Anthocyanin Content ◽  
Potato Flour ◽  
Nutritional Content ◽  
Randomized Experimental Design ◽  
Sweet Potato Flour ◽  
Purple Sweet Potato

The objective of the study was to determine the concentation ratio between purple sweet potato flour and wheat flour in order to produce purple sweet potato cookies having particular nutritional content and preffered by consumers. A completely randomized experimental design was applied in this study. One experimental factor which was ratio of purple sweet potato flur and wheat flour consisting five level of treatments, was as signed i,e 100%: 0%, 80:20%, 60%:40%, and 20%: 80% respectively. Variables measured were chemical composition (protein, fat, moisture, anthocyanin content) and sensory properties (colour, taste, texture, overall likeness). Results showed that most variables were influenced by the ratio of sweet potato flour and wheat flour, excluding moisture content. The ratio of 80% sweet potato flour : 20% wheat flour resulted in cookies with good characteristics and mostly preffered by parelists. Anthocyamin content of this particular cookies (80%: 20%) was similar to that of sweet potato flour.  Keywords: cookies, purple sweet potato flour, wheat flour   ABSTRAK  Penelitian ini bertujuan untuk menentukan konsentrasi tepung ubi jalar ungu dan tepung terigu yang tepat untuk menghasilkan kue kering ubi jalar ungu dengan kandungan gizi tertentu dan disukai. Rancangan yang digunakan adalah rancangan acak lengkap yang terdiri satu faktor dengan lima taraf perlakuan yaitu : Perbandingan tepung ubi jalar ungu dan tepung terigu 100% : 0%, 80% : 20%, 60% : 40%, 40% : 60%, 20% : 80%. Peubah yang di amati adalah komposisi kimia (penentuan kadar protein, kadar lemak, kadar air, kandungan antosianin) dan uji organoleptik (warna, rasa, tekstur, tingkat kesukaan). Hasil penelitian menunjukan bahwa perlakuan perbadingan tepung ubi jalar ungu dan tepung terigu mempengaruhi peubah-peubah yang diamati, sedangkan untuk kadar air tidak berbeda nyata. Berdasarkan hasil penelitian perlakuan perbandingan tepung ubi jalar ungu dan tepung terigu 80% : 20% dapat menghasilkan kue kering yang terbaik dan disukai. Kandungan antosianin kue kering ubi jalar dengan formulasi 80 : 20% tidak berbeda jauh dengan kandungan antosianin tepung ubi jalar. Kata kunci: kue kering, tepung terigu, tepung ubi jalar ungu

scholarly journals PENGARUH PENAMBAHAN TEPUNG UBI JALAR UNGU (Ipomea batatas L. var. ayamurasaki) TERHADAP KARAKTERISTIK HEALTH-PROMOTING YOGURT

2019 ◽  
Vol 8 (4) ◽  
pp. 341
Author(s):  
Gusti Chandra Rizki ◽  
Komang Ayu Nocianitri ◽  
I Made Sugitha
Keyword(s):  
Antioxidant Activity ◽  
Lactic Acid ◽  
Sweet Potato ◽  
Block Design ◽  
Potato Flour ◽  
Randomized Block Design ◽  
Health Promoting ◽  
Sweet Potato Flour ◽  
Purple Sweet Potato ◽  
The Right

This research aims to identify the effect of adding purple sweet potato flour to the characteristics of health-promoting yogurt and to identify the right concentration of purple sweet potato flour to produce health-promoting yogurt with the best characteristics. This research used a Randomized Block Design (RBD) of the addition of purple sweet potato flour with the concentration of 0%, 2%, 4%, 6%, 8%. Each treatment was repeated 3 times, resulting in 15 experimental units. The data were then Analyzed of Variance (ANOVA) method and if the treatment had an effect on the variable, the Duncan Multiple Range Test (DMRT) were performed. The results showed purple sweet potato flour has significant effect to lactic acid total, pH, antioxidant activity, color, texture, and taste of health-promoting yogurt and did not significantly affect LAB total, hedonic taste, aroma, and overall acceptance. The addition of 8% purple sweet potato flour resulted in the best characteristic under the following criteria: 1.23% of lactic acid total, 3.73 of pH, 90.33% of antioxidant activity, 13.19 log CFU/ml of LAB total, pink color and indefferent color, thick texture rather like, sour taste rather like, flavor and overall acceptance rather like. Keywords: health-promoting yogurt, purple sweet potato flour, antioxidant.  

scholarly journals Yellow sweet potato flour: use in sweet bread processing to increase β-carotene content and improve quality

2018 ◽  
Vol 90 (1) ◽  
pp. 283-293 ◽  
Author(s):  
AMANDA C. NOGUEIRA ◽  
GEORGIA A.R. SEHN ◽  
ANA PAULA REBELLATO ◽  
JANCLEI P. COUTINHO ◽  
HELENA T. GODOY ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Improve Quality ◽  
Potato Flour ◽  
Carotene Content ◽  
Sweet Potato Flour ◽  
Β Carotene

scholarly journals PERBEDAAN KADAR ANTOSIANIN UBI UNGU SEGAR DAN TEPUNG UBI UNGU VARIETAS LOKAL DAN ANTIN 3 PADA BEBERAPA ALAT PENGERINGAN

2021 ◽  
Vol 10 (4) ◽  
pp. 313-320
Author(s):  
Fuadiyah Nila Kurniasari ◽  
Yosfi Rahmi ◽  
Cintantya Islami Putri Devina ◽  
Nabilah Rohadatul Aisy ◽  
Anggun Rindang Cempaka
Keyword(s):  
Sweet Potato ◽  
Anthocyanin Content ◽  
Potato Flour ◽  
Food Ingredient ◽  
Local Varieties ◽  
Food Ingredients ◽  
Second Stage ◽  
Significant Difference ◽  
Sweet Potato Flour ◽  
Purple Sweet Potato

Background: Purple sweet potato is one of the local Asian food ingredients known as "people's food". Purple sweet potato is rich in anthocyanins which function as antioxidants and immunonutrients. In addition to being widely used as food or traditional snacks, purple sweet potato can be used as a functional food ingredient rich in anthocyanins. For example, purple sweet potato flour can be used as an essential ingredient for processed foods.Objectives: To analyze differences in anthocyanin levels in fresh purple sweet potato local varieties of Gunung Kawi and Antin 3 and purple sweet potato flour with different drying tools.Methods: This research consist of two research stages. The first phase analyzes differences in anthocyanin content in fresh purple sweet potatoes local varieties of Gunung Kawi and Antin 3 with a RAL research design (Completely Randomized Design) 3 repetitions. Then, the second stage of the research used a one-shot case study with 3 treatment groups: drying with an electric oven, cabinet dryer, and food dehydrator. Anthocyanin levels were tested using the UV-Vis spectrophotometry method. Differences in fresh purple sweet potato anthocyanins were analyzed using an independent t-test. Meanwhile, the different anthocyanin levels of purple sweet potato flour were analyzed using one-way ANOVA.Results: The first stage of the study showed that the anthocyanin content of fresh purple sweet potato Antin 3 was seven times higher than that of Gunung Kawi (53.94±25.6 v.s 7.59±2.4 mg/100 g) with p=0.036. The second stage of the study, showed no statistically significant difference in anthocyanin levels (p = 0.066) in 3 different drying equipment.Conclusion: Antin 3 purple sweet potato variety is purple sweet potato with the highest anthocyanin content. The purple sweet potato flour was dried with 3 different drying tools, resulting in anthocyanin levels that were not significantly different.Keywords: Anthocyanin; Gunung Kawi local purple sweet potato; Antin 3 purple sweet potato; Purple sweet potato flour; Drying equipment

scholarly journals RASIO TEPUNG TAPIOKA, TEPUNG KETAN DAN TEPUNG UBI JALAR UNGU TERHADAP SIFAT FISIKOKIMIA DODOL

Pro Food ◽  
2018 ◽  
Vol 4 (2) ◽  
pp. 324
Author(s):  
Solihatun Hafizah ◽  
Ahmad Alamsyah ◽  
Yeni Sulastri
Keyword(s):  
Sweet Potato ◽  
Chemical Quality ◽  
Potato Flour ◽  
Total Anthocyanin ◽  
Physical Quality ◽  
L Value ◽  
Sweet Potato Flour ◽  
Purple Sweet Potato ◽  
Tapioca Flour

ABSTRACT           The purpose of this research was to determine the effect of the ratio of tapioca flour, glutinous flour and purple sweet potato flour to the physicochemical properties of dodol with chemical quality (moisture content, total anthocyanin, and reduction sugar) and physical quality of the color (L value and oHue value). This study used Randomized Block Design (RBD) consisting of 6 treatments T1= Tapioca Flour 80%: Glutinous Flour 10%: Purple Sweet Potato Flour 10%, T2= Tapioca Flour 70%: Glutinous Flour 15%: Purple Sweet Potato Flour 15%, T3= Tapioca Flour 60%: Glutinous Flour 20%: Purple Sweet Potato Flour 20%, T4=Tapioca Flour 50%: Glutinous Flour 25%: Purple Sweet Potato Flour 25%, T5= Tapioca Flour 40%: Glutinous Flour 30%: Purple Sweet Potato Flour 30%, T6= Tapioca Flour 30%: Glutinous Flour 35%: Purple Sweet Potato Flour  35% with 3 times repetitions. The data of the research were analyzed using the diversity analysis at 5% level using Co-stat software and tested continued using the test of Honest Real Difference (HRD) if there was real difference. The results showed that the ratio of tapioca flour, glutinous flour and purple sweet potato flour gave a significantly different effect on chemical quality (moisture content, total anthocyanin, and reduction sugar), and physical quality of the color (oHue value) but gave no significant effect on physical quality of the color (L value). The result showed that the ratio of tapioca flour 30%: glutinous flour 35%: purple sweet potato flour  35% was the best treatment with moisture contect of 24.21%, total anthocyanin 8.48 mg/100g, reducing sugar 7.83%, L value of 23.85 and oHue value 360.14   Keywords: dodol, glutinous flour, tapioca flour, purple sweet potato flour   ABSTRAK Tujuan dari penelitian ini adalah untuk mengetahui pengaruh rasio tepung tapioka, tepung ketan dan tepung ubi jalar ungu terhadap sifat fisikokimia dodol dengan kualitas kimia (kadar air, total antosianin, dan kadar gula reduksi) dan mutu fisik warna (nilai L dan nilai oHue). Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) yang terdiri dari 6 perlakuan T1= Tepung Tapioka  80% :Tepung Ketan 10% :Tepung Ubi Jalar Ungu  10%, T2= Tepung Tapioka  70% :Tepung Ketan 15% :Tepung Ubi Jalar Ungu 15%, T3= Tepung Tapioka  60% :Tepung Ketan  20% :Tepung Ubi Jalar Ungu  20%, T4= Tepung Tapioka  50% :Tepung Ketan  25% :Tepung Ubi Jalar Ungu  25%, T5= Tepung Tapioka  40% :Tepung Ketan  30% :Tepung Ubi Jalar Ungu  30%, T6= Tepung Tapioka  30% :Tepung Ketan  35% :Tepung Ubi Jalar Ungu 35% dengan 3 kali pengulangan. Data hasil penelitian dianalisis menggunakan analisis keragaman pada taraf 5% menggunakan software Co-stat dan diuji lanjut menggunakan uji Beda Nyata Jujur (BNJ) jika terdapat beda nyata. Hasil penelitian menunjukkan bahwa rasio tepung tapioka, tepung ketan dan tepung ubi jalar ungu memberikan pengaruh yang berbeda nyata terhadap mutu kimia (kadar air, total antosianin dan gula reduksi) dan mutu fisik warna (nilai oHue) namun memberikan pengaruh yang tidak berbeda nyata terhadap mutu fisik warna (nilai L). Berdasarkan hasil penelitian menunjukkan bahwa rasio tepung tapioka (30%), tepung ketan (35%) dan tepung ubi jalar ungu (35%) merupakan perlakuan terbaik dengan kadar air sebesar 24,21%, total antosianin 8,48 mg/100g, gula reduksi 7,83%, nilai L sebesar 23,85 dan nilai oHue 360,14.   Kata Kunci: dodol, tepung ketan, tepung tapioka, tepung ubi jalar ungu.

Effect of high hydrostatic pressure on phenolic compounds, ascorbic acid and antioxidant activity in cashew apple juice

2010 ◽  
Vol 30 (4) ◽  
pp. 507-513 ◽  
Author(s):  
C. Queiroz ◽  
C. F.F. Moreira ◽  
F. C. Lavinas ◽  
M. L.M. Lopes ◽  
E. Fialho ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Phenolic Compounds ◽  
Hydrostatic Pressure ◽  
High Hydrostatic Pressure ◽  
Apple Juice ◽  
Cashew Apple Juice ◽  
Cashew Apple

scholarly journals Total Polyphenol Content, Antioxidant Activity, and Individual Phenolic Composition of Different Edible Parts of 4 Sweet Potato Cultivars

2020 ◽  
Vol 15 (7) ◽  
pp. 1934578X2093693
Author(s):  
Shadrack Isaboke Makori ◽  
Tai-Hua Mu ◽  
Hong-Nan Sun
Keyword(s):  
Antioxidant Activity ◽  
Sweet Potato ◽  
Potato Cultivar ◽  
Potato Cultivars ◽  
Anthocyanin Content ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Total Anthocyanin ◽  
Total Polyphenol Content ◽  
Edible Parts

The quest to determine and use polyphenolic compounds present in fruits and vegetables as natural antioxidants has recently attracted much attention due to their beneficial health effects. In this study, the total polyphenol content (TPC), total flavonoid content (TFC), total anthocyanin content (TAC), antioxidant activity (AA), and individual polyphenol components of Simon No. 1, Yuzi No. 7, Shangshu 19, and Pushu 32 sweet potato cultivars (edible parts: leaf, stalk, stem, skin, and flesh) were investigated. TPC, TFC, and TAC values ranged from 440 ± 0.17-12080 ± 0.58 CAE mg/100 g DW, 94 ± 0.08-4210 ± 0.74 QE mg/100 g DW, and 7 ± 0.01-1010 ± 0.54 CGE mg/100 g DW, respectively. Yuzi No. 7 sweet potato cultivar contained significantly higher amounts of TPC, TFC, TAC, and AA in all its edible parts, followed by Pushu 32, Simon No. 1, and Shangshu 19 in that order. Regardless of the sweet potato cultivar used, TPC, TFC, and TAC of sweet potato leaves were significantly higher than those of other edible parts. High-performance liquid chromatography revealed 19 individual phenolic compounds. In general, 3,5-di- O-caffeoylquinic acid, astragalin, and cyanidin were the predominant phenolic acid, flavonoid, and anthocyanin compounds, respectively. The correlation analysis suggested that higher AA could be attributed to higher polyphenol content. Based on our results, edible parts of Yuzi No. 7 sweet potato cultivar presented the highest amounts of polyphenol content and AA suggesting the possibility of utilizing this cultivar by farmers and the food industry as a functional food product.

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