Phenolic-rich Pomegranate Peel Extract: In Vitro, Cellular, and In Vivo Activities for Skin Hyperpigmentation Treatment

Planta Medica ◽  
2020 ◽  
Vol 86 (11) ◽  
pp. 749-759
Author(s):  
Mayuree Kanlayavattanakul ◽  
Wichayada Chongnativisit ◽  
Puxvadee Chaikul ◽  
Nattaya Lourith

AbstractThe pomegranate phenolics are reported to have cutaneous benefits and to be effective in treating skin disorders, including hyperpigmentation. In this context, a preparation method was developed by which to obtain phenolic-rich pomegranate peel extract. Sinapic acid was presented as the major pomegranate peel phenolics, followed by gallic and ellagic acids, and 4 additional phenolics. The extract exhibited strong antioxidant activity with an in vitro tyrosinase inhibitory effect. The skin hyperpigmentation treating potency was confirmed by the suppression of cellular melanogenesis through tyrosinase and TRP-2 inhibitions as examined in the B16F10 melanoma cells. Cellular antioxidant and proliferative activities of the extract toward human dermal fibroblasts were evidenced, as well as an inhibitory effect against MMP-2. The extract was developed into the stable serum and mask. The products were proved to be non-irritated in 30 Thai volunteers participating in a single application closed patch test. A split-face, randomized, double-blind, placebo-controlled test of the skin lightening effect was evaluated in the 30 volunteers over 28 consecutive daily treatments and monitored by the Mexameter MX 18. The active serum and mask were better in facial skin lightening efficacy than the placebo (p < 0.005). That was in accordance with the sensory evaluation scored by the volunteers. Phenolic-rich pomegranate peel extract is evidenced as a safe herbal derived material promising for skin hyperpigmentation treatment. Supportive information regarding chemical and biological profiles is presented with the confirmed safety and cutaneous benefits in volunteers.

Author(s):  
Qabaha K. ◽  
Al-Rimawi F ◽  
Nusseibeh S. ◽  
Abbadi J J. ◽  
Abu-Lafi S.

An in-vitro evaluation of the anti-inflammatory and antioxidant activities of pomegranate peel extract from Palestine were investigated. In parallel, the total phenolic content (TPC) and the total flavonoids content (TFC) were measured. The antioxidant activities were determined spectrophotometrically by DPPH, FRAP, CUPRAC and the ABTS methods. The phenolic and flavonoid contents were separated and partially identified using HPLC and LC-MS. In-vitro inhibitory effect of the extract on production of Interlukin-6 (Il-6) and Tumor Necrosis Factor-α (TNF-α) by Lipopolysacaride (LPS)-induced polymorphonuclear Cells (PMNCs) was evaluated. Pomegranate peel extract was found to have strong antiinflamatory activity as revealed by the reduction in the levels of IL-6 and TNF-alfa. It was also found that it is rich in phenoloic and flavonoids that enhanced its reducing activity and free radical scavenging ability.


2020 ◽  
Vol 28 ◽  
pp. 204020662091657
Author(s):  
Ali Karimi ◽  
Mohammad-Taghi Moradi ◽  
Mohammad Rabiei ◽  
Somayeh Alidadi

Background Adenovirus causes a number of diseases in human, and can cause serious infection in severely immunosuppressed individuals. Despite the seriousness of adenovirus infection, there is no definitely approved anti-adenoviral therapy. Many studies have shown that compounds derived from medicinal plants have antiviral activity. Therefore, this study evaluated in vitro anti-adenoviral activity of ethanol extract, fractions, and main phenolic compounds of pomegranate peel. Methods The ethanol extract of pomegranate peel was prepared with maceration method and fractionated by consecutive liquid/liquid partition. The cytotoxic and anti-adenovirus activities of the extract, fractions, and main phenolic compounds (ellagic acid, punicalagin and gallic acid) were evaluated on Hep-2 cell line using MTT assay. Inhibitory effect on adsorption and post-adsorption phases of the virus replication cycle was also evaluated. Results Pomegranate peel extract had a desirable effect against adenovirus with IC50 of 5.77 µg/mL and selectivity index of 49.9. Among the fractions and compounds, the n-butanol fraction and gallic acid had the highest anti-adenoviral activity with IC50 of 2.16 µg/mL and 4.67 µM and selectivity indices of 122.5 and 10.5, respectively. The crude extract, n-butanol fraction and gallic acid inhibited the virus replication in post-adsorption phase ( p <  0.01). Conclusion Pomegranate peel extract, especially its n-butanol fraction, could serve as a new promising anti-adenovirus agent due to high inhibitory effect against adenovirus replication. The effect of the n-butanol fraction may be related to the synergistic effect or other compounds of this fraction. Further understanding of the bioassay guided isolation of natural compounds of this fraction seems essential.


Antibiotics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 705
Author(s):  
Asmaa M. El-Kady ◽  
Iman A. M. Abdel-Rahman ◽  
Samer S. Fouad ◽  
Khaled S. Allemailem ◽  
Taghrid Istivan ◽  
...  

Giardiasis is a major diarrheal disease affecting approximately 2.5 million children annually in developing countries. Several studies have reported the resistance of Giardia lamblia (G. lamblia) to multiple drugs. Therefore, identifying an effective drug for giardiasis is a necessity. This study examined the antiparasitic effect of Punica granatum (pomegranate) and evaluated its therapeutic efficacy in rats infected with G. lamblia. In vitro study showed high efficacy of pomegranate peel ethanolic extract in killing G. lamblia cysts as demonstrated by eosin vital staining. We showed that treating infected rats with pomegranate extract resulted in a marked reduction in the mean number of G. lamblia cysts and trophozoites in feces and intestine respectively. Interestingly, the number of G. lamblia trophozoites and cysts were significantly lower in the pomegranate extract-treated group compared to the metronidazole-positive control group. Moreover, pomegranate extract treatment significantly induced nitric oxide (NO) and reduced serum IL-6 and TNF-α, compared to infected untreated rats. Histological and scanning electron microscopy (SEM) examination of the jejunum and duodenum of pomegranate extract-treated animals confirmed the antiparasitic effect of the extract, and demonstrated the restoration of villi structure with reduction of villi atrophy, decreased infiltration of lymphocytes, and protection of intestinal cells from apoptotic cell death. In conclusion, our data show that the pomegranate peel extract is effective in controlling G. lamblia infections, which suggests that it could be a viable treatment option for giardiasis.


2021 ◽  
pp. 105145
Author(s):  
Relja Suručić ◽  
Maja Travar ◽  
Miroslav Petković ◽  
BiljanaTubić ◽  
Miloš P. Stojiljković ◽  
...  

2020 ◽  
Vol 246 (9) ◽  
pp. 1765-1772
Author(s):  
I. Belgacem ◽  
L. Schena ◽  
N. Teixidó ◽  
F. V. Romeo ◽  
G. Ballistreri ◽  
...  

2020 ◽  
Vol 37 (3) ◽  
pp. 133-140
Author(s):  
Thais M. Silva ◽  
Thays C. A. Bolzan ◽  
Marcos S. Zanini ◽  
Taiana Alencar ◽  
Winner D. Rodrigues ◽  
...  

Herbal therapies are used worldwide to treat a variety of health conditions, including dental conditions in veterinary medicine. In this context, the use of medicinal plant-based formulations as potential therapeutics and preventatives in veterinary dentistry is worth highlighting. The objective of the present study was to develop a mucoadhesive ointment formulation, named orabase, that contained pomegranate extract for use in the oral cavity of dogs, with the aim of improving their oral hygiene. The hydroalcoholic extracts of pomegranate peels was incorporated into the orabase in 3 different concentrations. The formulations were subjected to in vitro microbiological testing by a modified disc-diffusion method to study the susceptibility of microorganisms collected from the oral cavities of the dogs. The samples were taken from the buccal mucosa of dogs having the same management and diet. The most effective formulation was submitted to physicochemical tests to evaluate the functionality of the product, namely pH, swelling index, spreadability, and mechanical properties (hardness, cohesiveness, and adhesiveness). The formulation containing 25.0% w/w of the extract was considered most suitable for the intended use as it showed antiseptic activity and demonstrated a swelling index of approximately 35% in the first 20 minutes of the test, high spreadability, and suitable mechanical properties. The results suggest that the product obtained from pomegranate peel extract is a viable option for use to improve oral hygiene, helping to reduce the bacterial component of dental plaque in dogs.


2017 ◽  
Vol 1 (5) ◽  
Author(s):  
Monica Amelia ◽  
Diana K Jasaputra ◽  
Rita Tjokropranoto

Helminths infections caused by Soil-Transmitted Helminths (STH) are found in manypeople living in developing countries, especially in rural areas. People often use pomegranate asan anthelmintic. The aim of this research is to find out the effects of pomegranate peel (Punicagranatum L.) as an anthelmintic to female Ascaris suum in vitro. The research on the effects ofpomegranate peel extract has been conducted on 900 female Ascaris suum in vitro. Ascaris suumare divided into 5 groups, group I: pomegranate peel extract of dose 25%, group II: pomegranatepeel extract of 50%, group III: pomegranate peel extract of 75%, group IV: 0.9% NaCl as anegative control, and group V is given mebendazole 0.5% as a positive control. The meanpercentage of dead worms in group I is 39%, in group II 61%, while in group III 82%, but itspotential is lower than mebendazole, which kills 100%. The treatment using pomegranate peelextract of 25%, 50% and 75% respectively has significant differences with p < 0.05 againstnegative control (NC) using a 0.9% NaCl. The research concludes that the pomegranate peelextract has an anthelmintic effect against Ascaris suum females in vitro.Keywords: pomegranate peel extract, anthelmintic effect, in vitro


2019 ◽  
Vol 32 (3) ◽  
pp. 115-120
Author(s):  
Sara Darakhshan ◽  
Mohammad Malmir ◽  
Fereshteh Bagheri ◽  
Mohsen Safaei ◽  
Roohollah Sharifi ◽  
...  

Abstract As high as 20% of the population is thought to have recurrent aphthous stomatitis (RAS), hence, finding new therapeutic agents may be needed. Pomegranate (Punica granatum), has been extensively used in the folk medicine of many cultures, as it possesses antioxidant, anti-inflammatory and anti-bacterial properties. In this study, it is hypothesized that a topical form of pomegranate peel extract (PPE) may shorten the duration, accelerate the healing and reduce the pain of RAS patients. The presented randomized, double-blind study was conducted on 56 patients. Herein, 28 patients were advised to apply PPE gel, and the other 28 patients were given placebo gel, twice daily for one week. Efficacy evaluations were made at days 0 (before using the gel), 3, 5 and 7. The mean values of ulcer size, pain and healing duration of ulcers were compared in both groups. PPE gel was significantly effective in reducing the pain (p<0.001), ulcer size (p<0.001), and healing duration of ulcers (p<0.001) over a period of one week. PPE in the form of oral gel can be used in the management of aphthous ulcers.


2019 ◽  
Vol 14 (6) ◽  
pp. 1934578X1985997
Author(s):  
Jeong-Kee Kim ◽  
Nok-Hyun Park ◽  
Jae-Sung Hwang

Recent studies revealed that citrus peel has beneficial effects in various disorders associated with nitric oxide and/or oxidative stress. In this study, we investigated the effects of Jeju citrus ( Citrus unshiu) peel using various in vitro and in vivo methods. First, the inhibitory effect of citrus peel extract (CPE) on enzymatic activity of tyrosinase was evaluated. Tyrosinase activity was dose-dependently decreased by CPE. Second, the effect of CPE on melanogenesis was determined by measuring the melanin content in melan-a cells. The inhibitory effect of CPE on melanin synthesis was greater than that of vitamin C. Finally, the effect of long-term supplementation with CPE on ultraviolet B-induced skin pigmentation was examined in guinea pigs. Administration of CPE improved Δ L-value compared with the nontreated ultraviolet control group. As a strong inhibitor of melanogenesis, CPE could be used as a depigmentation agent and a supplement for skin lightening.


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