Stability and antioxidant activity of anthocyanins from purple sweet potato ( Ipomoea batatas L. cultivar Eshu No. 8) subjected to simulated in vitro gastrointestinal digestion

2019 ◽  
Vol 54 (8) ◽  
pp. 2604-2614 ◽  
Author(s):  
Zi‐wei Yang ◽  
Cui‐e Tang ◽  
Jiu‐liang Zhang ◽  
Qing Zhou ◽  
Zi‐cheng Zhang
Keyword(s):  
Antioxidant Activity ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Gastrointestinal Digestion ◽  
In Vitro Gastrointestinal Digestion ◽  
Purple Sweet Potato

scholarly journals PENGARUH PENAMBAHAN Eucheuma cottonii DAN Sargassum sp. TERHADAP KOMPOSISI KIMIA, AKTIVITAS ANTIOKSIDAN SERTA SIFAT SENSORI SELAI UBI JALAR UNGU (Ipomoea batatas Poir)

2020 ◽  
Vol 3 (1) ◽  
pp. 43
Author(s):  
Umi Kalsum ◽  
Asnani Asnani ◽  
Kobajashi Togo Isamu
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Water Content ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Sensory Properties ◽  
Crude Fiber ◽  
Test Results ◽  
Purple Sweet Potato ◽  
Eucheuma Cottonii

The effect of addition of Eucheuma cotttonii and Sargassum sp. on chemical composition, antioxidant activity and sensory properties of purple sweet potato jam (Ipomoea batatas Poir) ABSTRACT         This study aims to determine the effect of the addition of Eucheuma cottonii and Sargassum sp. on chemical composition, antioxidant activity and sensory properties of purple sweet potato jam. This study used a Completely Randomized Design (CRD) consisting of four treatments using the combination of Sargassum sp., E. cottonii and purple sweet potatoes respectively: 45: 5: 50% (S1), 40: 10: 50% (S2), 35 : 15 : 50 % (S3), 30 : 20 : 50% (S4) and repeat three times. The results of the research obtained showed a real effect on sensory values which included color, aroma, and texture. The test results of the chemical content of jam showed water content between 27.62 %, ash content 1.59 %, crude fiber 1.44 % and carbohydrates 88.96 %. The test results of antioxidant content with percentage inhibitor (IC50) that is 337.81 μg / mL respectively. The results of this study indicate that there is an influence on the content of water content, ash, crude fiber, total carbohydrates and antioxidant content present in the purple sweet potato jam in each treatment.Keywords: Eucheuma cottonii, Ipomoea batatas, chemical composition and antioxidants, Sargassum sp., Jam, Sensory test ABSTRAKPenelitian ini bertujuan untuk mengetahui pengaruh penambahan rumput laut jenis Eucheuma cottonii dan Sargassum sp. terhadap komposisi kimia, aktivitas antioksidan dan sifat sensori selai ubi jalar ungu. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari  empat perlakuan kombinasi penggunaan Sargassum sp., E. cottonii dan ubi jalar ungu, yaitu berturut-turut: 45: 5: 50 % (S1), 40: 10: 50 % (S2), 35: 15: 50 % (S3), serta 30: 20: 50 % (S4), ulangan sebanyak tiga kali. Hasil penelitian yang diperoleh menunjukkan pengaruh nyata terhadap nilai sensori yang meliputi warna, aroma dan tekstur. Hasil uji kandungan kimia selai menunjukkan kadar air 27,62 %, kadar abu 1,59%, serat kasar 1,44 % dan karbohidrat 88,96 %. Hasil uji kandungan antioksidan dengan nilai persentase penghambat (IC50) yaitu 337,81 g/mL. Hasil penelitian ini menunjukkan bahwa terdapat pengaruh terhadap kandungan kadar air, abu, serat kasar, karbohidrat total dan kandungan antioksidan yang ada pada selai ubi jalar ungu pada setiap perlakuan.Kata kunci: Eucheuma cottonii, Ipomoea batatas Poir, komposisi kimia dan antioksidan, Sargassum sp., Selai, uji sensori.

EFFECT OF HEAT TREATMENT ON THE ANTIOXIDANT ACTIVITIES OF TWO CULTIVARS OF SWEET POTATOES

2016 ◽  
Vol 78 (6-12) ◽  
Author(s):  
Amir H. M. S. ◽  
Nurun N. ◽  
Nida Iqbal ◽  
Nur F. R. ◽  
Lee L. H. ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Antioxidant Activities ◽  
Sweet Potatoes ◽  
Moist Heat ◽  
Dry Heat ◽  
Significant Difference ◽  
Ic50 Values ◽  
Purple Sweet Potato

Natural sources of antioxidants are derived from fruits, vegetables and wine, whilst artificial supplements are from teas and spices. Sweet potato (Ipomoea batatas) is an excellent natural source of vitamins and minerals, and likely a great source of antioxidant. The objective of this study  is to analyze the antioxidant activity of orange sweet potato (Vitato) and  purple sweet potato (All purple), prepared as heat dry and  moist heat for 30 minutes at 100oC. All the samples were obtained from Pasir Puteh and MARDI Telong, Bachok, Kelantan, respectively. Both samples were soaked into methanol to obtain the crude extract prior to analyzing for antioxidant activity by using 2, 2-diphenyl-1-picryl hydrazyl (DPPH). IC50 values of dry heat and moist heat Vitato were 0.40mg/L and 0.20mg/L while dry heat and moist heat, All purple were 0.32mg/L and 0.19mg/L, respectively. Both moist heat samples enjoyed higher scavenging activities compared to dry heat samples. However, the All purple sample of moist heat is the most superior one. Significant difference of IC50values between dry heat and moist heat sample differ significantly. Thus, this study clearly demonstrated that moist heat sweet potato exhibited  excellent increase in antioxidant activity.

Stability, antioxidant activity and in vitro bile acid-binding of green, black and dark tea polyphenols during simulated in vitro gastrointestinal digestion

RSC Advances ◽  
2015 ◽  
Vol 5 (112) ◽  
pp. 92089-92095 ◽  
Author(s):  
Zhengmei Wu ◽  
Jianwen Teng ◽  
Li Huang ◽  
Ning Xia ◽  
Baoyao Wei
Keyword(s):  
Antioxidant Activity ◽  
Bile Acid ◽  
Phenolic Compounds ◽  
Binding Activity ◽  
Tea Polyphenols ◽  
Gastrointestinal Digestion ◽  
In Vitro Gastrointestinal Digestion ◽  
Bile Acid Binding ◽  
The Stability

The stability and antioxidant activity of phenolic compounds, as well as the bile acid-binding activity of green, black, raw liubao and aged liubao tea duringin vitrogastrointestinal digestion were evaluated.

scholarly journals PENGARUH PERBANDINGAN TEPUNG BERAS DENGAN PASTA UBI JALAR UNGU (Ipomoea batatas L. Poir) TERHADAP KARAKTERISTIK CENDOL

2019 ◽  
Vol 8 (3) ◽  
pp. 248
Author(s):  
Putri Ayu Wulandari ◽  
I Made Sugitha ◽  
Ni Made Indri Hapsari Arihantana
Keyword(s):  
Antioxidant Activity ◽  
Water Content ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Rice Flour ◽  
Ash Content ◽  
Fiber Content ◽  
Crude Fiber ◽  
Crude Fiber Content ◽  
Purple Sweet Potato

This research was aimed to identify the comparison effect of rice flour and purple sweet potato (Ipomoea batatas L. Poir) paste on the characteristics of cendol and to identify the right ratio of rice flour and purple sweet potato paste to produce cendol with the best characteristics. Completely randomized design was used in this research with treatment ratio of rice flour and purple sweet potato paste which consisted of 6 levels :  50% : 50%, 40% : 60%, 30% : 70%, 20% : 80%, 10% : 90%, and 0% : 100 %. Each treatment was repeated 3 times, resulting in 18 experimental units. The data were then analyzed with analysis of variance and if the treatment had an effect on the variable, the Duncan test was performed. The results showed that rice flour and purple sweet potato paste ratio had significant effect on water content, ash content, crude fiber content, antioxidant activity, anthocyanin, color, texture, flavor, taste, and overall acceptance of cendol. Making purple sweet potato cendol without using rice flour resulted the best characteristic under the following criteria: 89,47%  water content, 0,14% ash content, 1,44% crude fiber content, 93,42 mg/mL antioxidant activity, 1,37 mg/100g  anthocyanin, dark purple and very liked color, texture chewy and liked, flavor typical of purple sweet potato and liked, taste very typical of purple sweet potato and liked, and overall acceptance very liked.   Keyword : cendol, purple sweet potato paste, rice flour

Storage proteins of two cultivars of sweet potato (Ipomoea batatas L.) and their protease hydrolysates exhibited antioxidant activity in vitro

Plant Science ◽  
2005 ◽  
Vol 168 (2) ◽  
pp. 449-456 ◽  
Author(s):  
Wen-Chi Hou ◽  
Chuan-Hsiao Han ◽  
Hsien-Jung Chen ◽  
Chi-Luan Wen ◽  
Yaw-Huei Lin
Keyword(s):  
Antioxidant Activity ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Storage Proteins
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