Title |
Characterization of Roselle calyx from different geographical origins
|
---|---|
Published in |
Food Research International, June 2018
|
DOI | 10.1016/j.foodres.2018.06.049 |
Pubmed ID | |
Authors |
Nurul Hanisah Juhari, Wender L P Bredie, Torben Bo Toldam-Andersen, Mikael Agerlin Petersen |
Abstract |
Roselle (Hibiscus sabdariffa L.) is considered an underexploited food crop with nutritional and large scale processing potential. Roselle can be utilized as a functional food, mainly due to being rich in vitamin C, anthocyanins, other phytochemicals, and natural color. Although Roselle has been widely planted and consumed, little is known about the composition of aroma profiles. In this study, seventeen samples of dried Roselle calyx were collected from eight countries and the aroma profiles were determined by dynamic headspace sampling and GC-MS and GC-olfactometry. Furthermore, total soluble solids, pH, and color L* a* b* were determined, and sugars and acids were measured using ion chromatography. There were significant (p < 0.05) differences in all measured variables in physicochemical properties and non-volatile compounds. A total of 135 volatiles were identified mainly terpenes, aldehydes, esters, furans, and ketones. Thirty-seven odorants were reported as potentially important aroma compounds based on GC-olfactometry. This study provides valuable information for future commercial utilization of Roselle in the food industry. |
X Demographics
As of 1 July 2024, you may notice a temporary increase in the numbers of X profiles with Unknown location. Click here to learn more.
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 1 | 100% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Science communicators (journalists, bloggers, editors) | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 119 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Bachelor | 16 | 13% |
Unspecified | 11 | 9% |
Student > Ph. D. Student | 9 | 8% |
Student > Master | 8 | 7% |
Researcher | 6 | 5% |
Other | 21 | 18% |
Unknown | 48 | 40% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 21 | 18% |
Unspecified | 11 | 9% |
Chemistry | 9 | 8% |
Pharmacology, Toxicology and Pharmaceutical Science | 6 | 5% |
Engineering | 5 | 4% |
Other | 15 | 13% |
Unknown | 52 | 44% |