Preoperative fasting for the infusion of “yerba mate”: a randomized clinical trial with ultrasound evaluation of gastric contents

Alcarraz, Paola; Servente, Liliana; Kuster, Federico; Duarte, Leticia; Garau, Mariela; Desirello, María; Blanc, Lourdes; Bracesco, Nélson; Perlas, Anahi

doi:10.1016/j.bjane.2021.12.010

Cited by 2 publications

(5 citation statements)

References 19 publications

(16 reference statements)

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“…The highest ( p ≤ 0.05) osmolality, similarly to °Brix, was found in a single-brewed YM-A-1-100 infusion (55.33 ± 0.58 mOsm/kg•H 2 O), whereas the lowest ( p ≤ 0.05) was observed in both, single (45.33 ± 0.58 mOsm/kg•H 2 O) and double Yerba Mate brewing (11.67 ± 0.58 mOsm/kg•H 2 O) at 70 °C. The osmolality of the tested Yerba Mate infusions obtained by double brewing was similar to the results of other authors, who showed the value of this parameter at the level of 12.8 mOsm/kg•H 2 O in Yerba Mate infusions [ 57 ].…”

Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 99%

“…These pH results are confirmed by other authors. Alcarraz et al (2021) [57] obtained the pH of Yerba Mate infusions from 4.5 to 5.0, while others at the level of about 4.3 ± 0.01 [58]. The tested Yerba Mate infusions were characterized by an acidic reaction (pH < 7.0), which could indicate good microbiological quality of the dried products and their greater durability due to the inhibition of the development of microorganisms responsible for product rotting during improper storage conditions [56].…”

Section: Physicochemical Properties Of Dried Yerba Mate and Its Diffe...mentioning

confidence: 99%

“…The tested infusions were also characterized by very low osmolality, with over 3.5 times higher in single brewing ( [57].…”

Section: Physicochemical Properties Of Dried Yerba Mate and Its Diffe...mentioning

confidence: 99%

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Changes in the Physicochemical and Bioactive Properties of Yerba Mate Depending on the Brewing Conditions

Najman,

Rajewski,

Sadowska

et al. 2024

Molecules

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Yerba Mate drink made from dried and crushed leaves and twigs of Paraguayan holly (Ilex paraguariensis A. St.-Hil.), which is a valuable source of bioactive substances, in particular antioxidants. The available literature lacks data on changes in the content and profile of bioactive compounds such as tannins, caffeine, the phenolic acid profile of flavonoids and carotenoids, as well as total polyphenol content and antioxidant activity in Yerba Mate infusions depending on different brewing conditions, and how different brewing conditions affect the physicochemical properties of these infusions. Therefore, this study evaluated the physicochemical properties of dried and Yerba Mate infusions prepared via single and double brewing processes at 70 °C and 100 °C. The organoleptic evaluation, as well as the instrumental color measurement, showed significant changes in the total color difference (ΔE) and the L*a*b* chromatic coordinates of dried Yerba Mate samples and their infusions. Moreover, the research showed higher contents of tannins (mean 1.36 ± 0.14 g/100 g d.m.), caffeine (mean 17.79 ± 3.49 mg/g d.m.), carotenoids (mean 12.90 ± 0.44 μg/g d.m.), phenolic acids (mean 69.97 ± 7.10 mg/g d.m.), flavonoids (mean 5.47 ± 1.78 mg/g d.m.), total polyphenols (mean 55.26 ± 8.51 mg GAE/g d.m.), and antioxidant activity (mean 2031.98 ± 146.47 μM TEAC/g d.m.) in single-brewed Yerba Mate infusions compared to double-brewed (0.77 ± 0.12 g/100 g d.m., 14.28 ± 5.80 mg/g d.m., 12.67 ± 0.62 μg/g d.m., 57.75 ± 8.73 mg/g d.m., 3.64 ± 0.76 mg/g d.m., 33.44 ± 6.48 mg GAE/g d.m. and 1683.09 ± 155.34 μM TEAC/g d.m., respectively). In addition, infusions prepared at a lower temperature (70 °C) were characterized by a higher content of total polyphenols and higher antioxidant activity, in contrast to the tannin and carotenoid contents, the levels of which were higher at 100 °C than at 70 °C. Considering the high amount of bioactive ingredients, in particular antioxidants, and a wide range of health benefits, it is worth including Yerba Mate in the daily diet.

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Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Section: Physicochemical Properties Of Dried Yerba Mate and Its Diffe...mentioning

confidence: 99%

“…The tested infusions were also characterized by very low osmolality, with over 3.5 times higher in single brewing ( [57].…”

Section: Physicochemical Properties Of Dried Yerba Mate and Its Diffe...mentioning

confidence: 99%

See 2 more Smart Citations

Changes in the Physicochemical and Bioactive Properties of Yerba Mate Depending on the Brewing Conditions

Najman,

Rajewski,

Sadowska

et al. 2024

Molecules

View full text Add to dashboard Cite

show abstract

“…Therefore, with this definition up to 6–13% of patients who have formally fasted will have an increased gastric fluid volume. 11 , 43 , 44 , 45 , 46 Cho and colleagues 47 found a fasting gastric volume >1.5 ml kg −1 in 31% of gynaecological patients and Zhou and colleagues 48 in 48% of patients with diabetes. However, the incidence of perioperative aspiration is only 0.02–0.04% in retrospective studies 49 , 50 and 0.02–0.07% in elective adults and children in prospective studies.…”

Section: Risk Factors For Pulmonary Aspirationmentioning

confidence: 98%

Preoperative fasting and the risk of pulmonary aspiration—a narrative review of historical concepts, physiological effects, and new perspectives

Rüggeberg,

Meybohm,

Nickel

2024

BJA Open

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Preoperative fasting for the infusion of “yerba mate”: a randomized clinical trial with ultrasound evaluation of gastric contents

Cited by 2 publications

References 19 publications

Changes in the Physicochemical and Bioactive Properties of Yerba Mate Depending on the Brewing Conditions

Changes in the Physicochemical and Bioactive Properties of Yerba Mate Depending on the Brewing Conditions

Preoperative fasting and the risk of pulmonary aspiration—a narrative review of historical concepts, physiological effects, and new perspectives

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