Effects of Steam Treatment Time and Drying Temperature on Properties of Sweet Basil’s Antioxidants, Aroma Compounds, Color, and Tissue Structure

This study has developed a production method for high-quality Genova tea with excellent antioxidant properties. The antioxidant properties of each part of the Genova basil plant (i.e., leaves, flowers, and stems) were determined; the leaves and flowers showed higher antioxidant values. We also investigated the effects of steaming time and drying temperature on the antioxidant composition and properties, color, and aroma using leaves with good yield potential and high antioxidant properties. The color showed excellent green color retention with freeze- and machine-drying at 40 °C without steam-heat treatment. Steaming for 2 min was effective in maintaining high values of total polyphenol content, antioxidant properties (1,1-diphenyl-2-picrylhydrazine and hydrophilic oxygen radical adsorption capacity), rosmarinic acid, and chicoric acid, and a drying temperature of ≤40 °C was recommended. Freeze-drying without steaming was the best method to retain all three of Genova’s main aroma components, Linalool, trans-alpha-bergamotene, and 2-methoxy-3-(2-propenyl)-phenol. The method developed in this study can improve the quality of dried Genova products and be applied in the food industry, cosmetics, and pharmaceutical industries.

[1]  H. Ikeura,et al.  Effect of different tea manufacturing methods on the antioxidant activity, functional components, and aroma compounds of Ocimum gratissimum , 2022, LWT.

[2]  Kajal,et al.  Antimicrobial Potential of Essential Oils from Aromatic Plant Ocimum sp.; A Comparative Biochemical Profiling and In-Silico Analysis , 2022, Agronomy.

[3]  Y. Tsurunaga,et al.  Production of persimmon and mandarin peel pastes and their uses in food , 2021, Food science & nutrition.

[4]  A. Figiel,et al.  Comparison of Traditional and Novel Drying Techniques and Its Effect on Quality of Fruits, Vegetables and Aromatic Herbs , 2020, Foods.

[5]  R. Schuurink,et al.  Glandular trichomes: micro-organs with model status? , 2019, The New phytologist.

[6]  Wenli Sun,et al.  Chemical components and pharmacological benefits of Basil (Ocimum basilicum): a review , 2020 .

[7]  V. Muchenje,et al.  Phytochemical Constituents and Antioxidant Activity of Sweet Basil (Ocimum basilicum L.) Essential Oil on Ground Beef from Boran and Nguni Cattle , 2019, International journal of food science.

[8]  C. H. Lau,et al.  Review on rosmarinic acid extraction, fractionation and its anti-diabetic potential. , 2018, Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association.

[9]  S. S. Možina,et al.  Antioxidative and antibacterial properties of organically grown thyme(Thymus sp.) and basil (Ocimumbasilicum L.) , 2018, TURKISH JOURNAL OF AGRICULTURE AND FORESTRY.

[10]  Yutang Wang,et al.  Effects of Different Drying Methods on the Total Phenolic, Rosmarinic Acid and Essential Oil of Purple Perilla Leaves , 2017 .

[11]  Vassilis Gekas,et al.  Drying Technologies: Vehicle to High-Quality Herbs , 2016, Food Engineering Reviews.

[12]  M. A. Saeed,et al.  Biological and Pharmacological Properties of the Sweet Basil (Ocimum basilicum) , 2015 .

[13]  A. Adholeya,et al.  A novel in vitro whole plant system for analysis of polyphenolics and their antioxidant potential in cultivars of Ocimum basilicum. , 2014, Journal of agricultural and food chemistry.

[14]  G. S. Pereira,et al.  Rupture of glandular trichomes in Ocimum gratissimum leaves influences the content of essential oil during the drying method , 2014 .

[15]  Jungmin Lee,et al.  Chicoric acid: chemistry, distribution, and production , 2013, Front. Chem..

[16]  R. Boggia,et al.  DEHYDRATION OF PDO GENOVESE BASIL LEAVES (OCIMUM BASILICUM MAXIMUM L. CV GENOVESE GIGANTE) BY DIRECT OSMOSIS , 2013 .

[17]  Marek Wesolowski,et al.  Quality consistency evaluation of Melissa officinalis L. commercial herbs by HPLC fingerprint and quantitation of selected phenolic acids. , 2013, Journal of pharmaceutical and biomedical analysis.

[18]  Qing-Han Gao,et al.  Effect of drying of jujubes ( Ziziphus jujuba Mill.) on the contents of sugars, organic acids, α-tocopherol, β-carotene, and phenolic compounds. , 2013, Journal of agricultural and food chemistry.

[19]  Zhong-Zhen Zhao,et al.  Determination of the content of rosmarinic acid by HPLC and analytical comparison of volatile constituents by GC-MS in different parts of Perilla frutescens (L.) Britt , 2013, Chemistry Central Journal.

[20]  Simona M Cristescu,et al.  Rapid tomato volatile profiling by using proton-transfer reaction mass spectrometry (PTR-MS). , 2012, Journal of food science.

[21]  A. Hino,et al.  Method Validation by Interlaboratory Studies of Improved Hydrophilic Oxygen Radical Absorbance Capacity Methods for the Determination of Antioxidant Capacities of Antioxidant Solutions and Food Extracts , 2012, Analytical sciences : the international journal of the Japan Society for Analytical Chemistry.

[22]  E. Kwee,et al.  Variations in phenolic composition and antioxidant properties among 15 basil (Ocimum basilicum L.) cultivars , 2011 .

[23]  S. Lanteri,et al.  Study of different kinds of “Pesto Genovese” by the analysis of their volatile fraction and chemometric methods , 2009 .

[24]  K. Ferrare,et al.  Chicoric acid, a new compound able to enhance insulin release and glucose uptake. , 2008, Biochemical and biophysical research communications.

[25]  Emily D. Niemeyer,et al.  Effects of nitrogen fertilization on the phenolic composition and antioxidant properties of basil (Ocimum basilicum L.). , 2008, Journal of agricultural and food chemistry.

[26]  A. Şener,et al.  Determination of some biochemical properties of polyphenol oxidase from Emir grape (Vitis vinifera L. cv. Emir) , 2006 .

[27]  F. Siano,et al.  Assessment of agronomic, chemical and genetic variability in common basil (Ocimum basilicum L.) , 2006 .

[28]  L. Kott,et al.  Heat stress reduces the accumulation of rosmarinic acid and the total antioxidant capacity in spearmint (Mentha spicata L) , 2005 .

[29]  C. Jayasinghe,et al.  Phenolics composition and antioxidant activity of sweet basil (Ocimum basilicum L.). , 2003, Journal of agricultural and food chemistry.

[30]  Christopher B. Johnson,et al.  UV-B is required for normal development of oil glands in Ocimum basilicum L. (sweet basil). , 2002, Annals of botany.

[31]  K. Okazaki,et al.  Antiaggregant effects on human platelets of culinary herbs , 1998 .

[32]  T. Kawahata,et al.  Anti-HIV-1 activity of herbs in Labiatae. , 1998, Biological & pharmaceutical bulletin.

[33]  Y. Sugimura,et al.  Characteristic Components Found in the Essential Oil of Ocimum basilicum L. , 1997 .

[34]  S. Bhatia,et al.  Effect of drying methods on biochemical quality of basil leaf , 2018 .

[35]  Joachim Müller,et al.  Changes of essential oil content and composition during convective drying of lemon balm (Melissa officinalis L.) , 2014 .