03432cab a2200337Ia 4500001000800000003000500008008004100013040001300054041001300067090002400080100003000104240007200134245016600206246019800372300001500570347001900585504002500604520201600629546002302645650002402668650003202692650001702724653001702741700002802758700002402786773007202810856007802882942001202960952010502972999001703077u186733ENAL211003s2020    ua     ss b         eng d  aEALcEAL  aengbara  aART EJFS V48 No1 151 aRiyad, Youssef  M.93336110aEgyptian journal of food science, 2020 v.48h[electronic resource].10aEvaluation of the properties of frankincense powder and its water extracts and the effect of its addition on guava nectar characteristicsh[electronic resource].15aتقييم خصائص مسحوق اللبان الدكر (Boswellia carterii) ومستخلصاته المائية وتأثير إضافته على خصائص نكتار الجوافة  a159-171 p.  atext filebPDF  aIncludes references.  aFrankincense (Boswellia carterii) has many medicinal benefits. In Egypt, a few people like to use it in chewing and sometimes in incense. This study aimed to use the water extract of frankincense powder prepared by soaking in drinkable water for 24 hr (T1) and boiling in water for one hour (T2) for the fortification of guava nectar in concentrations ranging from 0.25 to 2% (volume/ volume (v/v)). The chemical composition, phenols, and flavonoids contents of the frankincense were determined. Anti-oxidant (DPPH method) and antimicrobials (pathogenic bacteria) and cytotoxicity (HepG-2 and MCF-7 human cancer cell lines) activities were measured. Sensory evaluation and the physical properties of the guava nectar mixed with water extracts of frankincense were evaluated. The phenols and total flavonoid contents of the T2 sample were 0.869 and 0.147 mg/g, respectively. However, it was 0.748 and 0.070 mg/g, respectively for T1. The results showed that frankincense powder has 93.74% antioxidant activity with 67.26 mg/ml IC50. The results also showed that the T2 sample has antibacterial activity against Salmonella typhi and Bacillus cereus. The results also showed that the frankincense powder has cytotoxic activity and this activity is strong on HepG-2 human cancer cell lines compared to the positive control (doxorubicin), however, it is less activity on the human breast adenocarcinoma (MCF-7). The IC50 values of the frankincense powder were 7.8 and 33.9 μM, respectively, while doxorubicin values were 10.3 and 28.5 μM, respectively. The results of the sensory evaluation showed that water extracts of the frankincense can be added to guava nectar at concentrations up to1%. It can be concluded that it is possible to mix aqueous extracts of the frankincense with guava nectar to obtain a product with a pleasant taste, color, and aroma and having also the advantages of frankincense.
Keywords: Frankincense (Boswellia carterii), Anti-oxidant and anti-microbial activities, Cytotoxicity activity  aSummary in Arabic. 0aFrankincense933370 0aGuava924510zEgyptzFayoum 0aFruit juices 0aAnti-oxidant1 aBarakat, Heba A.9333581 aAmer, Sara A.931310 tEgyptian Journal of Food Science, 2020 v.48x111001927nnaswu3036740uhttp://nile.enal.sci.eg/EALE/2020/EJFS/4820/1/159.pdfzFull Text Article.  cAR2alc  00102alc4070aENALbENALd2021-10-03l0oART EJFS V48 No1 15r2021-10-03 00:00:00w2021-10-03yAR  c67037d67037