Fruit characters and physico-chemical properties of roselle (Hibiscus sabdariffa L.) in Thailand—A screening of 13 new genotypes

Sukkhaeng, Siriphan; Promdang, Somnuk; Doung-ngern, Uthaiwan

doi:10.1016/j.jarmap.2018.10.001

Cited by 15 publications

(8 citation statements)

References 14 publications

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“…The findings of Ph level in the current study agreed with values reported (34) for the pH of roselle from Malaysia (2.49) similar to another report (35) who reported 2.16±0.02. The titratable acidity in the present study is in agreement with an earlier report (35,36). Organic acid findings were attributed to the presence of acids in the roselle extract, including citric acid, hydroxy citric acid, hibiscus acid, malic and tartaric acid as main constituents and oxalic and ascorbic acid as minor compounds (37).…”

Section: Discussionsupporting

confidence: 93%

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The Effects of Various Drying Techniques on Physicochemical and Nutritional Qualities of (Hibiscus sabdariffa L.) Roselle Calyx

et al. 2022

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The calyx of the roselle plant (Hibiscus sabdariffa L.) has been extensively studied for its anthocyanins. Roselle calyces are exceedingly perishable, making the process of drying and extracting them without sacrificing quality quite difficult. Similarly, there are several commercial drying procedures available, each with its own set of benefits and drawbacks on nutritional and physicochemical qualities in the final product. The goal of this study was to examine the effects of sun, oven and freeze drying on the physicochemical and nutritional properties of roselle calyx. The antioxidant (%RSA), total anthocyanin content (TAC) and their HPLC identification, physicochemical as well as proximate composition were determined. The results showed that freeze drying increased the drying rate significantly and retained the antioxidant activity (32 mg/100 g QE) then fresh calyx, sun and oven drying, freeze-dried calyx also have higher TAC (176.9 mg/l) than sun and oven dried calyx, the HPLC analysis revealed two anthocyanidin cyanidine glucoside and cyanidin glucoside. phytochemicals and proximate of roselle calyces were higher in freeze-dried than oven and sun drying techniques employed. The findings demonstrated that freeze drying the roselle calyces preserve their quality characteristics.

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Section: Discussionsupporting

confidence: 93%

“…The calyx characteristics were aided by the colour qualities. Our results on colour measurement are consistent with those of with a few exceptions (36).…”

Section: Discussionsupporting

confidence: 92%

The Effects of Various Drying Techniques on Physicochemical and Nutritional Qualities of (Hibiscus sabdariffa L.) Roselle Calyx

et al. 2022

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“…Apart from extract preparation, plant genotypes were also attributed to TMA value difference. Sukkhaeng et al [10] reported that dark purple closed calyx has the highest TMA value of 1948.43 mg cy-3-glu/100g dry calyx among the 15 roselle genotypes studied.…”

Section: Anthocyanins Of Fresh Hibiscus Rosa-sinensis L Clitoria Tern...mentioning

confidence: 96%

“…Several flowers have been proven to be rich in anthocyanin content. These include Hibiscus rosa-sinensis L. [6,7], Clitoria ternatea L. [8,9] and Hibiscus sabdariffa L. [10,11]. They have the ability to enhance the appearance of the flowers.…”

Section: Introductionmentioning

confidence: 99%

Anthocyanin degradation kinetics and thermodynamic analysis of Hibiscus rosa-sinensis L. Clitoria ternatea L. and Hibiscus sabdariffa L.

Cheok

Ragunathan

2022

PROGEE

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Anthocyanins are natural occurrence red pigments existed in most flowers with high health benefited values. These anthocyanins rich flowers have a short shelf life and fast degradation when in fresh stage. These anthocyanins rich flowers have a short shelf life and fast degradation when in fresh stage. Therefore, drying is a conventional way to preserve them from rotten in order to be reachable for urban consumers who have busy life style and limited space for planting. The present study was conducted to evaluate the anthocyanin degradation kinetics of Hibiscus rosa-sinensis L., Clitoria ternatea L. and Hibiscus sabdariffa L. at drying temperatures of 50, 60, 70 and 80 °C for durations of 10, 20, 30 and 40 min. Anthocyanin degradation kinetic order of Hibiscus rosa-sinensis L., Clitoria ternatea L. and Hibiscus sabdariffa L. were determined by constructing natural logarithm Arrhenius equation plots from k values obtained from zero-, first-, and second-order integrated rate law plots at each temperature levels of 50 °C, 60 °C, 70 °C and 80 °C, based on the highest coefficient of determination (R2). Fresh flower of Clitoria ternatea L. has been revealed possessed the highest amount of TMA followed by Hibiscus sabdariffa L. and the Hibiscus rosa-sinensis L. Results revealed that anthocyanins degradation for Hibiscus rosa-sinensis L. and Clitoria ternatea L. followed first-order kinetic behaviour, while Hibiscus Sabdariffa L. followed the second-order. Anthocyanins of Hibiscus Sabdariffa L. has been discovered having high k values which led to shorter half-life values. However, anthocyanins of Hibiscus Sabdariffa L. is more stable during heat drying treatment as evidenced by higher activation energy and activation enthalpy, but lower free Gibbs energy and absolute value of entropy in comparison to Hibiscus rosa-sinensis L. and Clitoria ternatea L. Therefore, Hibiscus sabdariffa L. is highly recommended to be used as food colorant in food processing industries which involve heating.

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“…The study aimed to review and document all the available evidence and information about the calyces of Hibiscus sabdariffa (roselle. Roselle is used in traditional medicine, due to overfill in phytochemicals like polyphenols, particularly anthocyanins, polysaccharides, and organic acids; hence, it has significant potential in modern medicinal applications (Riaz & Chopra, 2018;Sukkhaeng et al, 2018). It is traditionally cultivated owing to the usage of calyces, stems, leaves, and seeds as all organs have pharmacological and other uses (Wright et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Comprehensive seed priming assessment of Hibiscus sabdariffa L. in germination and seedling growth stage under salt stress

AHMADIZADEH

ASGARI²,

PASALARI³

2022

AAS

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This study was performed to appraise the effects of several seed pretreatment solutions and priming time on seed germination indices and growth characteristics of Hibiscus sabdariffa L. in various salt stress levels. Seed priming was accomplished by KCl (1 and 2 %), Na2SO3 (0.5 and 1 %), KNO3 (0.5 and 1 %), and Ca2CO3 (1 and 2 %) as halopriming and distilled water as hydropriming at 12 and 24 h priming durations and control (non-primed), then primed seeds exposed to four levels (0, 50, 100, 200 mM) of NaCl solutions. The highest germination percentage was observed in 12 and 24 h hydropriming (63.3 and 53.3 %) and non-primed (56.6 %) under normal condition, respectively. Besides, there was no germinated seed at 24 h priming by 0.5 and 1 percentage of KNO3. Under saline condition, 24 h 2 % Ca2CO3 had the highest germination percentage (43.3 %) in 50 mM, while 12 h treatment with 0.5 % Na2SO3 (33.3 %) had high germination percentage in 100 mM levels of saline conditions. Also, the highest germination rate index was observed in 0.5 % Na2SO3 with 12 h treatment time (4.05 and 3.95 respectively) in 50 and 100 mM levels of saline conditions. Overall, salt stress considerably reduced germination and growth traits of Hibiscus sabdariffa L. seedlings. Considering the effect of various seeds priming of Hibiscus sabdariffa L. on germination indices like germination percentage and mean germination time, the importance of priming duration and type of priming solutions could be concluded.

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Fruit characters and physico-chemical properties of roselle (Hibiscus sabdariffa L.) in Thailand—A screening of 13 new genotypes

Cited by 15 publications

References 14 publications

The Effects of Various Drying Techniques on Physicochemical and Nutritional Qualities of (Hibiscus sabdariffa L.) Roselle Calyx

The Effects of Various Drying Techniques on Physicochemical and Nutritional Qualities of (Hibiscus sabdariffa L.) Roselle Calyx

Anthocyanin degradation kinetics and thermodynamic analysis of Hibiscus rosa-sinensis L. Clitoria ternatea L. and Hibiscus sabdariffa L.

Comprehensive seed priming assessment of Hibiscus sabdariffa L. in germination and seedling growth stage under salt stress

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