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What is total phenolic content of rice?

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The total phenolic content (TPC) of rice varies among different varieties and colors. In the studies conducted, the TPC of rice ranged from 64.58 μg to 357.62 μg of GAE/gm FW in shoot and from 92.32 to 196.54 mg of GAE/100 g DW in brown rice varieties . Additionally, the TPC of germinated black rice extract was found to be 2269 mg/g . Furthermore, the TPC of Sri Lankan red rice varieties was observed to be in the range of 0.676 to 0.900 mg TAE/g FW . Unpolished colored rices showed TPC ranging from 135.84 µg to 470.96 µg FAE/g db sample, with the highest in unpolished red rice . These findings highlight the significant variability in TPC across different rice varieties and processing methods.

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Open access•Journal Article•DOI The Total Antioxidant Capacity and the Total Phenolic Content of Rice Using Water as a Solvent. Priyanthi C, Ramiah Sivakanesan - Show less +1 more 27 Mar 2021-International journal of food science 10 Citations	Total phenolic content of rice varieties Attakkari, Bg2907, and Bg407 ranged from 0.676 to 0.900 mg tannic acid equivalent (TAE)/g fresh weight (FW).
Open access•Journal Article•DOI Comparing the LC-MS Phenolic Acids Profiles of Seven Different Varieties of Brown Rice (Oryza sativa L.) Shuyi Li, Hui Xu, Yong Sui, Xin Mei, Jianbin Shi, Sha Cai, Tian Xiong, Celia Carrillo, Juan Manuel Castagnini, Zhen Zhou Zhu, Francisco J. Barba - Show less +10 more 25 May 2022-Foods 19 Citations	Total phenolic content of brown rice varieties ranged from 92.32 to 196.54 mg of gallic acid equivalent (GAE)/100 g DW, with Luotiangongmi having the highest content.
Journal Article•DOI Display of distinct endogenous phenolic contents in different rice ecotypes grown under normal conditions: a potent biomarker system for sensing growth, stress and adaptability Shamshad Ul Haq, Deepa Kumari, P. Dhingra, Shreya Kothari, Sumita Kachhwaha - Show less +4 more 25 Apr 2022-Research Journal of Biotechnology	Total phenolic content (TPC) in rice varied among ecotypes, with shoot TPC averaging 254.38 μg GAE/gm FW and root TPC averaging 84.82 μg GAE/gm FW, showing higher levels in shoots.
Open access•Journal Article•DOI Total Phenolic Content and Antioxidant Activity of Germinated Black Rice Variety Krisna Extract, Indonesia Sudana Fatahillah Pasaribu, Budiyanti Wiboworini, L. R. Kartikasari - Show less +2 more 07 Feb 2022-International journal of human and health sciences	The total phenolic content of germinated black rice variety Krisna from Indonesia is 2269 mg/g.

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What is the blank to be used for Total polyphenol content?5 answersThe blank material used for Total Polyphenol Content (TPC) determination involves a packaging material divided into different regions for manufacturing liquid packaging containers. This blank material is characterized by specific creases and regions, such as fold-over regions and end face regions, which allow for efficient folding and improved product quality without sealing seams. The TPC determination method utilizes spectrophotometric measurements after an oxidation reaction involving polyphenols and tungstic/molybdic acid, with absorbance directly proportional to the polyphenol content. Additionally, the TPC determination method involves the use of crude plant extracts in the presence of 3-methyl-2-benzothiazolinone hydrazone (MBTH), enabling rapid analysis with higher interference thresholds compared to standard methods. This comprehensive approach ensures accurate and efficient determination of total polyphenol content.

What is the correlation between total flavanoid content and phenolic content in different plant species?5 answersThe correlation between total flavonoid content and phenolic content in different plant species has been investigated in several studies. In one study, it was found that there is a good correlation between antioxidant activity and total phenolic content as well as total flavonoid content in neem flower extracts. Another study also established a significant correlation between antioxidant capacities and total phenol/flavonoid content in methanolic extracts of medicinal plants. Similarly, a strong correlation was found between phenolic content, antioxidant activity, and enzyme inhibitory activity in commonly used medicinal herbs. Additionally, a study on jati putih leaves fraction showed a correlation between total phenolic and flavonoid content and antioxidant activity. These findings suggest that phenolic compounds, including flavonoids, play a major role in the antioxidant activity of plants.

Are rice color and total anthocyanin content related?5 answersRice color and total anthocyanin content are related. The colored grains of red, deep purple, or black rice varieties have been found to contain high levels of anthocyanins, which are a type of flavonoid and phenolic compound. RNA sequencing and proteome analysis of different colored rice cultivars also showed differences in the flavonoid biosynthesis pathway, indicating variations in anthocyanin content. Additionally, black rice cultivars have been found to have high secondary metabolite content, including anthocyanins, which contribute to their black and purple pigments. Purple rice brans have been found to accumulate both anthocyanins and proanthocyanidins, resulting in higher total phenolics and flavonoids. Furthermore, the total anthocyanin content in grains of Korean colored rice varieties has been positively correlated with their antioxidant activity. Therefore, the color of rice and its total anthocyanin content are closely linked, with colored rice varieties generally having higher levels of anthocyanins.

What is total phenolic content?5 answersTotal phenolic content refers to the amount of phenolic compounds present in a substance, such as plants or extracts. Phenolic compounds are a class of chemical compounds commonly found in plants and have many health benefits due to their antioxidant properties. They act as reducing agents, hydrogen donors, and quenchers of reactive oxygen species, protecting against oxidative damage. The total phenolic content can be determined using various methods, such as the Folin-Ciocalteu method, which involves reacting phenolic compounds with a reagent to form a colored complex that can be measured spectrophotometrically. The results are often expressed as gallic acid equivalents (GAE) or tannic acid equivalents (TAE) to quantify the phenolic content. Studies have shown variations in total phenolic content among different plant sources, with some vegetables, fruits, and herbal extracts having high levels of phenolic compounds.

How total phenolic content determination was done on cherry tomato?3 answersTotal phenolic content determination in cherry tomatoes was done using different methods in the studies. In one study by Rapa et al., the total phenolic content was determined using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) assays. Another study by Distefano et al.also used the DPPH assay to evaluate the antioxidant activity and total polyphenols content in cherry tomatoes. Oluk et al.determined the total phenolic content in cherry tomatoes using an unspecified method. The specific method used for total phenolic content determination was not mentioned in the abstract by Sánchez-Rodríguez et al.. However, they did mention that the identification and content of phenolic compounds were determined by high-performance liquid chromatography-mass spectrometry (HPLC-MS).

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