Article
Agricultural Engineering
Hui-Chi Huang, Wen-Te Chang, Yi-Hsuan Wu, Bo-Cheng Yang, Mo-Rong Xu, Ming-Kuem Lin, Hsi-Jien Chen, Jai-Hong Cheng, Meng-Shiou Lee
Summary: In this study, microbial fermentation of Hibiscus sabdariffa L. calyx extract was used to enhance its phytochemical constituents and biological activity, resulting in increased antioxidant activity and phenolic content, especially with Galactomyces geotrichum inoculation. The optimized fermentation conditions included 1% eHS addition and static culture method. High performance liquid chromatography (HPLC) and enzymatic activity analysis showed that the improved biological activities of fermented eHS were mainly due to increased levels of phenolic compounds, flavonoids, anthocyanin and its aglycone derivatives. This is the first report to demonstrate the use of microbial fermentation to improve the biological functionalities of fermented eHS.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Physical
Fidelis C. K. Ocloo, Victoria Appiah, Benedicta Asantewaa, Enoch T. Quayson
Summary: This study found that gamma irradiation can significantly reduce the microbial load of Roselle calyx powder, and doses of 8 and 10 kGy completely eliminate microorganisms in the samples.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Review
Chemistry, Medicinal
Efigenia Montalvo-Gonzalez, Zuami Villagran, Sughey Gonzalez-Torres, Laura Elena Iniguez-Munoz, Mario Alberto Isiordia-Espinoza, Jose Martin Ruvalcaba-Gomez, Ramon Ignacio Arteaga-Garibay, Jose Luis Acosta, Napoleon Gonzalez-Silva, Luis Miguel Anaya-Esparza
Summary: Hibiscus sabdariffa Linn. Malvaceae (HS) calyxes are widely used for cosmetic, food, and medicinal purposes. Studies have shown that HS consumption may have various health benefits, such as reducing blood pressure, improving lipid profile, lowering blood glucose levels, and reducing body fat mass. Clinical trials have not reported any adverse effects.
Article
Chemistry, Applied
Dongbei Shen, Faiza Labreche, Caie Wu, Gongjian Fan, Tingting Li, Jinfeng Dou, Jinpeng Zhu
Summary: The study found that ultrasound-assisted adsorption/desorption technique could efficiently purify jujube peel flavonoids, with ultrasound power and temperature affecting the adsorption/desorption characteristics of JPFs on MRs. Ultrasound technology can increase the surface roughness of macroporous resins, strengthen the formation of hydrogen bonds, and significantly enhance the content of principal flavonoids in JPFs, leading to improved biological activities.
Article
Biochemistry & Molecular Biology
Duanyang Wang, Maki Nagata, Masako Matsumoto, Yhiya Amen, Dongmei Wang, Kuniyoshi Shimizu
Summary: This study evaluated the bioactivities of different parts of Hibiscus sabdariffa L. and found that hibiscus acid has the potential to promote extracellular matrix synthesis, exhibit anti-inflammatory activity, and counter oxidative stress.
Article
Engineering, Chemical
Xiaocui Sun, Xue Liu, Guang-Rong Zhao
Summary: In this study, macroporous resin SP825 was successfully used to separate salidroside from fermentation broth, and an optimal separation process was established. The results showed high purity and yield of salidroside in the final product. This research has important application value in the downstream process of microbial fermentation.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Agronomy
Tugba Gonca Isin Ozkan, Kwame Sarpong Appiah, Emine Akalin, Yoshiharu Fujii
Summary: Weeds are a major problem in crop production, but the use of allelochemicals and allelopathic species can offer a sustainable solution for weed management. In a study conducted in Turkey, Hibiscus sabdariffa was found to have the strongest inhibitory potential among both wild and cultivated plants. This study aimed to assess the phytotoxic effects of H. sabdariffa extracts on Lactuca sativa using a bioassay experiment. The results showed that hydroxycitric acid lactone, a major compound in H. sabdariffa, had a strong growth inhibitory activity on L. sativa.
Article
Food Science & Technology
Sindhu Bharadhi Swarneswari Arunasalam, Nageswari Karthikeyan, Arumugam Thangaiah, Rajagopal Balasubramaniam, Anitha Thiyagarajan, Rajangam Jacob
Summary: Roselle (Hibiscus sabdariffa L.) is a comestible plant known for its fleshy red calyces. It is high in vitamins, minerals and bioactive substances, and has anti-bacterial, diuretic, anti-oxidant, and anti-mutagenic effects. The GC-MS technique was used to identify the chemicals found in the calyces, and 26 bioactive chemicals were discovered, supporting its pharmaceutical potential.
QUALITY ASSURANCE AND SAFETY OF CROPS & FOODS
(2023)
Article
Biochemistry & Molecular Biology
Jie Zhang, Chunrong Feng, Pu Ge, Qingqing Wang, Yanling Liu, Hui Xu, Xing Zhou
Summary: The study demonstrated a facile strategy for the separation and purification of hypericin from Hypericum perforatum L. extract using MRCC and PLC techniques. Various parameters of MRCC were investigated to optimize the separation efficiency of hypericin, while PLC parameters were determined to achieve high purity hypericin with a high recovery ratio.
PROCESS BIOCHEMISTRY
(2021)
Article
Materials Science, Composites
Gulsum Aydin, Mualla Yildiz
Summary: This study investigated the effects of incorporating Hibiscus sabdariffa L. extract (HE) and graphene oxide (GO) into corn starch-based films on their physical, mechanical, and antibacterial properties. The results showed that the addition of HE and GO increased the thickness, moisture content, solubility, and swelling degree of the films. FTIR spectra and SEM images confirmed the compatibility between starch, HE, and GO. Furthermore, the films exhibited strong antibacterial activity against both Gram-positive and Gram-negative bacteria.
POLYMER COMPOSITES
(2022)
Article
Engineering, Chemical
Chongrong Ke, Yang Ren, Ping Gao, Jian Han, Yong Tao, Jianzhong Huang, Xinwei Yang
Summary: This study developed a two-step process for the large-scale separation and purification of PQQ from crude fermentation broth, achieving high purity PQQ crystals. The process involved pretreatment, resin purification, and standardized operational parameters for scaled-up PQQ purification.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Horticulture
Hanyu Zheng, Ying Gao, Jianyong Zhang, Xin Meng, Qizhen Du, Junfeng Yin
Summary: This study compared the adsorption/desorption effectiveness and kinetics of Okicamelliaside (OCS) on five different resins, and found that AB-8 resin was the most effective for separating OCS. By optimizing the adsorption conditions, a purified extract with a high OCS content was obtained using AB-8 resin.
Article
Chemistry, Applied
Hector A. Romero Hernandez, Tomy J. Gutierrez, Juscelino Tovar, Luis A. Bello-Perez
Summary: Native and OSA-esterified corn starches were used to manufacture starch-polyphenol V-type complexes using aqueous extract of Roselle as a source of polyphenols. The complexes were formed through hydrogen bond and hydrophobic interactions between the starch and polyphenols. The presence of Roselle extract increased the retrogradation tendency of starch, allowing the production of starchy materials with high resistant starch content and low digestion rate.
FOOD HYDROCOLLOIDS
(2023)
Article
Plant Sciences
T-Thu Nguyen, Andree Voilley, Thi Thu Thuy Tran, Yves Wache
Summary: This study evaluates the potential of yeast hulls in stabilizing the color of anthocyanins. The results show that yeast hulls can effectively protect anthocyanins from the influence of temperature, light, and humidity.
PLANT FOODS FOR HUMAN NUTRITION
(2022)
Article
Biochemistry & Molecular Biology
Ixchell Y. Sedillo-Torres, alvaro O. Hernandez-Rangel, Yolanda Gomez-y-Gomez, Daniel Cortes-Avalos, Blanca Estela Garcia-Perez, Juan C. Villalobos-Rocha, Cesar H. Hernandez-Rodriguez, Luis Gerardo Zepeda-Vallejo, Paulina Estrada-de los Santos, Maria Elena Vargas-Diaz, Jose Antonio Ibarra
Summary: An organic extract of Hibiscus sabdariffa L. containing hibiscus acid was found to inhibit motility and reduce the secretion of virulence factors in Salmonella enterica serovars Typhi and Typhimurium. The compound was not toxic to eukaryotic cells and could reduce the invasion of Salmonella Typhimurium in epithelial cells. Initial studies suggested that the mode of action of hibiscus acid might involve the disruption of membrane proton balance.