Nutritional Ergogenic Aids: Introduction, Definitions and Regulatory Issues
Ira Wolinsky, Judy A. Driskell in Nutritional Ergogenic Aids, 2004
on a single or imperfect determination. To illustrate the point, lutein and zeaxanthin content of eggs was corrected in Table 18.1 by using published values of 300 mg lutein and 200 mg zeaxanthin in one egg yolk.34 The USDA original value is only 55 mg of lutein with zeaxanthin in 100 g of eggs (edible portion). According to the USDA database, the main carotenoid in papaya fruit is b-cryptoxanthin (761 mg/100 g) and there is no lycopene. However, Brazilian papayas were found to contain an average 2.65 mg of lycopene/100 g,60 and our unpublished data confirm it. Guava fruit is not included in the USDA database, although it is a good source of carotenoids and its consumption is quite popular among some ethnic groups. It contains a considerable amount of lycopene (5.3 mg/100 g)61 — more than fresh tomatoes.
Three Reasons Supplements Will Not Benefit Most People
David Lightsey in The Myths about Nutrition Science, 2019
However, the point is not which country’s recommendations is correct, but that either 40mg or 90mg per day will maintain a substantial reserve of vitamin C, and how easy it is to obtain through food. How hard is this to maintain without vitamin supplements? Easy—very easy. Following is a list of common foods and their vitamin C content as taken from Bowes and Church’s Food Values of Portions Commonly Used, 14th edition:8Cantaloupe, 1 cup = 68 mg.One medium guava = 165 mg.Kiwi fruit = 75mg.One navel orange = 80 mg. Strawberries, 1 cup = 85 mg.Frozen peaches, 1 cup = 235mg.Red raw chilies (3½ oz) = 369 mg (if you can handle the heat). The important point to remember here is that maintaining good vitamin C levels is not difficult.
Medicinal Plants: A Potent Antimicrobial Source and An Alternative to Combat Antibiotic Resistance
Jayanta Kumar Patra, Gitishree Das, Sanjeet Kumar, Hrudayanath Thatoi in Ethnopharmacology and Biodiversity of Medicinal Plants, 2019
Infectious diseases represent an important cause of illness and death among the general population, especially in developing countries. Therefore, the emphasis has to be focused on developing new antimicrobial drugs in recent years, especially due to the constant emergence of microorganisms resistant to conventional antimicrobials. Many plants species are known for their antimicrobial characteristics as a virtue of secondary metabolites they synthesis (Nascimento, Locatelli, Freitas and Silva, 2000). These bioactive compounds are mainly alkaloids, tannin, phenolic compound, and flavonoids. Their concentration in plant/plant part decides the level of activity and specificity of that particular plant against infection. For example, tea is active against many types of cancers (Mukhtar and Ahmad, 2000), leaves and bark of guava provide immunity against gastrointestinal disorders, toothaches. Neem leaves are well known for their activity against hepatitis, skin infection and diabetes (Sarmiento, Maramba and Gonzales, 2011). They have the potential to replace the existing antibiotics because of their specific activity, minimum or no side effect and cost-effectiveness. The need of discovering new antibiotics from medicinal plants has gained much interest because of the current issue of microbial resistance to antibiotics. Antimicrobial resistance is a huge problem worldwide; it interferes both the prevention as well as treatment. Therefore the discovery and identification of new antimicrobial substance are necessary so that new medicines can be produced (Farjana, Zerin and Kabir, 2014). Many new antibiotic drugs are synthesized by pharma companies to elucidate the microbial resistance.
Lycopene and Chrysin through Mitigation of Neuroinflammation and Oxidative Stress Exerted Antidepressant Effects in Clonidine-Induced Depression-like Behavior in Rats
Published in Journal of Dietary Supplements, 2023
Ekram Nemr Abd Al Haleem, Hebatalla I. Ahmed, Reem N. El-Naga
Lycopene is a carotenoid compound found naturally in fruits and vegetables with red colors, like tomato and watermelon. Moreover, it is found in other fruits, including papaya and pink guava. Numerous benefits have long been recognized for its contribution to health development (13). Lycopene has a high capacity for scavenging free radicals; it is 10, 47, and 100 times more effective at scavenging singlet oxygen than alpha-tocopherol, beta-carotene, and vitamin E, respectively (14). Further, more evidence suggests that lycopene possesses additional properties, including anti-apoptosis (15) and anti-inflammation (16). Treatment with lycopene significantly reduces the impairment of behavioral, biochemical, and mitochondrial dysfunction, as well as glutathione depletion, thereby preventing the development of depression and anxiety (17). It was reported to possess blood-brain barrier permeability caused by its lipophilic nature and potent neuroprotective properties (18).
Phytochemical profile, enzyme inhibition activity and molecular docking analysis of Feijoa sellowiana O. Berg
Published in Journal of Enzyme Inhibition and Medicinal Chemistry, 2021
Fatema R. Saber, Rehab M. Ashour, Ali M. El-Halawany, Mohamad Fawzi Mahomoodally, Gunes Ak, Gokhan Zengin, Engy A. Mahrous
Acca sellowiana O. Berg. syn. Feijoa sellowiana O. Berg. belongs to the Myrtaceae family. It is commonly known as pineapple guava or guavasteen due to its fruit’s characteristic aroma and close resemblance to guava, Psidium guajava L. of the same family1,2. The plant is native to South America but has been introduced to different climatic regions including the Mediterranean1. It is cultivated for its edible aromatic fruit and also, as ornamental trees. The introduction of Feijoa in different climates resulted in the availability of many varieties of the plant with different genotypes and chemical compositions2.
Silk nanoparticles for the protection and delivery of guava leaf (Psidium guajava L.) extract for cosmetic industry, a new approach for an old herb
Published in Drug Delivery, 2023
Duy Toan Pham, Doan Xuan Tien Nguyen, Ruby Lieu, Quoc Cuong Huynh, Ngoc Yen Nguyen, Tran Thi Bich Quyen, Van De Tran
The guava leaves extraction efficiency was 12.82 ± 0.91%, and the extract possessed a dark-green color with a moisture content of 6.38 ± 0.04%, which was appropriate for further experiments. The total phenolic content in the GEE was 312.6 ± 0.14 mg GAE/g DPW. Our result was higher than that of the previous studies, which showed that the total phenolic content in the guava leaves were 53.04 ± 14.85 mg GAE/g fresh weight (Iamjud et al., 2014) and ∼110 mg GAE/g DPW (Seo et al., 2014). This could be due to the differences of the guava leaves from different region, soil and environmental conditions, and cultivation time, which result in different bioactive compounds contents.
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