Stevia rebaudiana is an introduced crop in India. The leaf and its extract although sweet have a bitter after taste that precludes commercial acceptability. The composition of the leaf reflected a high nutritive value and polyphenol concentration averaging 4.15% by weight of dried leaf. Variably processed extracts enriched with polyphenols, pigments and a mixture of both were evaluated for sensory attributes by a semi trained panel when added to cofee and lime juice. Presence of polyphenols influenced the acceptability of the sweeteners marginally, while chlorophyll was found unacceptable in any of the extracts. The antioxidant activity of the extracts was synergistic when it was mixed with coffee and lime juice. Complete purification of stevia leaf extracts to obtain pure glycosides is not necessary for it to become a commercially acceptable sweetener.
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http://dx.doi.org/10.1007/s13197-010-0011-7 | DOI Listing |
Nat Prod Bioprospect
January 2025
Royal Botanic Gardens Kew, Richmond, London, TW9 3AE, UK.
The Plectranthinae clade, which includes genera such as Plectranthus, Ocimum, and Aeollanthus, is well known for its diverse array of diterpenoids. While numerous studies have deepened the understanding of diterpene diversity across the clade, Aeollanthus species remain underexplored, with only two studies focusing on their diterpene profiles. The NMR-based chemical profiling of the EtOAc leaf extract of the rocky and succulent species Aeollanthus buchnerianus Briq.
View Article and Find Full Text PDFChem Biodivers
January 2025
Ataturk Universitesi, Chemistry, Yakutiye, 25440, Türkiye, 25440, Erzurum, TURKEY.
Research on natural antioxidants derived from plants has surged due to their potential health benefits. In the current study, the chemical composition, enzyme inhibitory activity, and antimicrobial effects of the Elaeagnus angustifolia L. plant, including leaves, flowers, and flower stalks extracts, were analyzed.
View Article and Find Full Text PDFJ Cancer
January 2025
Department of Basic Dental Sciences, College of Dentistry, Princess Nourah bint Abdulrahman University (PNU), P.O. Box 84428, Riyadh 11671, Saudi Arabia.
The increasing prevalence of cancer and bacterial resistance necessitates more effective anti-cancer and anti-bacterial treatments. This study explores the potential of medicinal plants, specifically () and (), in addressing this need, aiming to uncover new therapeutic interventions. Various extraction methods for the leaves of and were employed to investigate the anti-bacterial and anti-cancer properties of these herbs.
View Article and Find Full Text PDFPhysiol Mol Biol Plants
December 2024
College of Forestry and Landscape Architecture, Xinjiang Agricultural University, Xinjiang, 830052 China.
The consequences of walnut ( L.) leaf scorch (WLS) were studied using the cultivated varieties, Wen185 ( 'Wen 185') and Xinxin2 ( 'Xinxin2') in the Aksu region, Xinjiang, China. Photosynthetic parameters and indoor chemical analysis were used to determine the variations in photosynthetic characteristics, osmotic regulatory substances, antioxidant enzyme activities, and changes in fruit yield and quality between diseased and healthy leaves.
View Article and Find Full Text PDFFront Pharmacol
December 2024
Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.
Obesity, a growing global health concern, is linked to severe ailments such as cardiovascular diseases, type 2 diabetes, cancer, and neuropsychiatric disorders. Conventional pharmacological treatments often have significant side effects, highlighting the need for safer alternatives. Traditional Chinese Medicine (TCM) offers potential solutions, with plant extracts like those from leaves showing promise due to their historical use and minimal side effects.
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