Active Recombinant ThioredoxinhProtein with Antioxidant Activities from Sweet Potato (Ipomoea batatas[L.] Lam Tainong 57) Storage Roots

2004 ◽  
Vol 52 (15) ◽  
pp. 4720-4724 ◽  
Author(s):  
Dong-Jiann Huang ◽  
Hsien-Jung Chen ◽  
Wen-chi Hou ◽  
Chun-Der Lin ◽  
Yaw-Huei Lin
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Antioxidant Activities ◽  
Storage Roots

scholarly journals Comparative Assessment of Phenolic Profiles, Cellular Antioxidant and Antiproliferative Activities in Ten Varieties of Sweet Potato (Ipomoea Batatas) Storage Roots

Molecules ◽  
2019 ◽  
Vol 24 (24) ◽  
pp. 4476
Author(s):  
Yiming Sun ◽  
Zhijun Pan ◽  
Chunxian Yang ◽  
Zhenzhen Jia ◽  
Xinbo Guo
Keyword(s):  
Antioxidant Activity ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Antioxidant Activities ◽  
Pearson Correlation ◽  
Total Phenolic ◽  
Storage Roots ◽  
Total Antioxidant ◽  
Phenolic Profiles ◽  
Antiproliferative Activities

Sweet potato is the sixth most important crop widely cultivated around the world with abundant varieties. Different varieties gain different phenolic profiles which has drawn researchers’ attention for its unique health benefits. Our study evaluated the phenolic profiles, total and cellular antioxidant activities, antiproliferative activities, and cytotoxicity in 10 cultivated varieties of sweet potato in different colours. Among fourteen metabolites detected in our study, hyperoside, ferulic acid and caffeic acid were considered as prominent in SPSRs. According to the principle component analysis, phytochemical composition of HX22, YS15 and YS7 was quite similar. The results also evidenced that purple-fleshed varieties, such as YS43, YZ7 and YY153, have higher total phenolics content and corresponding stronger total antioxidant capacities as well as cellular antiproliferative activities against human liver cancer HepG2 cells than other varieties. The extremely significant correlation between phenolics and total antioxidant activity was also revealed by Pearson correlation analysis (p < 0.05). However, no significant relevance was found between intracellular antioxidant activity and total phenolic content or flesh colour of sweet potatoes.

Defensin protein from sweet potato (Ipomoea batatas [L.] Lam ‘Tainong 57’) storage roots exhibits antioxidant activities in vitro and ex vivo

2012 ◽  
Vol 135 (3) ◽  
pp. 861-867 ◽  
Author(s):  
Guan-Jhong Huang ◽  
Jeng-Shyan Deng ◽  
Hsien-Jung Chen ◽  
Shyh-Shyun Huang ◽  
Jung-Chun Liao ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Antioxidant Activities ◽  
Ex Vivo ◽  
Storage Roots

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.

The inheritance of ?-amylase null in storage roots of sweet potato,Ipomoea batatas (L.) Lam.

1990 ◽  
Vol 79 (3) ◽  
pp. 369-376 ◽  
Author(s):  
T. Kumagai ◽  
Y. Umemura ◽  
T. Baba ◽  
M. Iwanaga
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Storage Roots

scholarly journals Resistance to Ditylenchus destructor Infection in Sweet Potato by the Expression of Small Interfering RNAs Targeting unc-15, a Movement-Related Gene

2015 ◽  
Vol 105 (11) ◽  
pp. 1458-1465 ◽  
Author(s):  
Weijuan Fan ◽  
Zhaorong Wei ◽  
Min Zhang ◽  
Peiyong Ma ◽  
Guiling Liu ◽  
...  
Keyword(s):  
Transgenic Plants ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Muscle Protein ◽  
Nematode Resistance ◽  
Small Interfering Rnas ◽  
Storage Roots ◽  
Transgenic Lines ◽  
Food Security And Nutrition ◽  
Ditylenchus Destructor

Stem nematode (Ditylenchus destructor) is one of most serious diseases that limit the productivity and quality of sweet potato (Ipomoea batatas), a root crop with worldwide importance for food security and nutrition improvement. Hence, there is a global demand for developing sweet potato varieties that are resistant to the disease. In this study, we have investigated the interference of stem nematode infectivity by the expression of small interfering RNAs (siRNAs) in transgenic sweet potato that are homologous to the unc-15 gene, which affects the muscle protein paramyosin of the pathogen. The production of double-stranded RNAs and siRNAs in transgenic lines with a single transgene integration event was verified by Northern blot analysis. The expression of unc-15 was reduced dramatically in stem nematodes collected from the inoculated storage roots of transgenic plants, and the infection areas of their storage roots were dramatically smaller than that of wild-type (WT). Compared with the WT, the transgenic plants showed increased yield in the stem nematode-infested field. Our results demonstrate that the expression of siRNAs targeting the unc-15 gene of D. destructor is an effective approach in improving stem nematode resistance in sweet potato, in adjunct with the global integrated pest management programs.

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