Simultaneous Colorimetric Measurements of Antioxidant Capacity by Flow Injection Analysis with Paired Emitter Detector Diode

Manthong, Nantaya; Wilairat, Prapin; Nacapricha, Duangjai; Chaneam, Sumonmarn

doi:10.2116/analsci.18p512

Cited by 5 publications

(3 citation statements)

References 51 publications

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“…L-ascorbic acid solution (prepared using L-ascorbic acid reagent and 80% ethanol) was used as a standard curve, as per the methods of Sdiri et al [ 20 ] and Manthong et al [ 21 ]. The antioxidant capacity was expressed as ascorbic acid equivalent.…”

Section: Methodsmentioning

confidence: 99%

Assessment of Potential Nitrite Safety Risk of Leafy Vegetables after Domestic Cooking

Liu

Cui

et al. 2021

Foods

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Improper cultivation can easily cause excessive nitrate accumulation in leafy vegetables, and the cooking processes used to prepare them can upset their nitrate/antioxidant balance, affecting their potential nitrite safety risk (PNSR). We investigated the impacts stir-frying, steaming, microwaving, and boiling on the nitrate, nitrite, and antioxidant capacity in water spinach and cabbage, and observed the impacts of storage duration on the PNSR. The antioxidant/in vivo nitrite ratio (A/N) was used to evaluate the nitrite risks in the cooked vegetables. Boiling achieved the highest A/N ratio (1.57) for water spinach, reducing the nitrate content by 25% without significantly affecting the antioxidant capacity. Stir-frying achieved the highest A/N ratio (6.55) for cabbage, increasing the antioxidant capacity by 140% without significantly affecting the nitrate content. Furthermore, it was found that the storage periods for boiled water spinach and stir-fried cabbage should not exceed 12 h and 24 h, respectively. Appropriate cooking methods and limited storage times are thus required for leafy vegetable to prevent adverse health effects.

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Section: Methodsmentioning

confidence: 99%

Assessment of Potential Nitrite Safety Risk of Leafy Vegetables after Domestic Cooking

Liu

Cui

et al. 2021

Foods

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“…14 It presents advantages of low cost, easy operation and less time for analysis compared to chromatography. In addition, Manthong et al 15 proposed a FIA system using PEDD for the determination of antioxidant ins commercial fruit juice and instant tea products. Thongsaw et al 16 reported on the use of SPE-FI-CVAAS for mercury detection, and applied it to freshwater fish samples.…”

Section: Application Of Flow-based System For Quality Control and Foo...mentioning

confidence: 99%

Flow-based System: A Highly Efficient Tool Speeds Up Data Production and Improves Analytical Performance

et al. 2020

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In this review, we cite references from the period between 2015 and 2020 related to the use of a flow-based system as a tool to obtain a modern analytical system for speeding up data production and improving performance. Based on a great deal of concepts for automatic systems, there are several research groups introduced in the development of flow-based systems to increase sample throughput while retaining the reproducibility and repeatability as well as to propose new platforms of flow-based systems, such as microfluidic chip and paper-based devices. Additionally, to apply a developed system for on-site analysis is one of the key features for development. We believe that this review will be very interested and useful for readers because of its impact on developing novel analytical systems. The content of the review is categorized following their applications including quality control and food safety, clinical diagnostics, environmental monitoring and miscellaneous.

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“…19,20 Flow injection analysis (FIA) methods have the advantages of higher reproducibility, higher sample throughput, lower reagent consumption, and easier procedures than the batchwise methods. [31][32][33][34][35][36] Several FIA systems based on optode detectors have been reported. [21][22][23][24][25][26][27][28] Therefore, the combination of an FIA system and the optode detector based on L-RB is considered to be a very effective analytical method for determining AS.…”

Section: Introductionmentioning

confidence: 99%

Development of an Optode Detector for Determination of Anionic Surfactants by Flow Injection Analysis

2019

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A flow-injection analysis (FIA) method for assaying an anionic surfactant (AS) using AS optode detector was demonstrated. The optode membrane consists of 2-nitrophenyl octyl ether as a plasticizer, lactone form rhodamine B (L-RB) and poly(vinyl chloride). The linear response concentration range of the AS optode to AS was 20-100 μmol dm-3 in the FIA system. The sampling rate for an AS ion (40 μmol dm-3 sodium dodecylbenzenesulfonate) in the proposed FIA system was ca. 5 samples h-1. The AS level in commercially available laundry detergents by the proposed FIA system was determined.

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Simultaneous Colorimetric Measurements of Antioxidant Capacity by Flow Injection Analysis with Paired Emitter Detector Diode

Cited by 5 publications

References 51 publications

Assessment of Potential Nitrite Safety Risk of Leafy Vegetables after Domestic Cooking

Assessment of Potential Nitrite Safety Risk of Leafy Vegetables after Domestic Cooking

Flow-based System: A Highly Efficient Tool Speeds Up Data Production and Improves Analytical Performance

Development of an Optode Detector for Determination of Anionic Surfactants by Flow Injection Analysis

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