Technical Field

Invention relates to rose water in powder form and its production method.

The invention particularly relates to conversion of rose water into powder form by means of an effective and simple method in order to increase stabilization of rose water and facilitate easy use thereof.

Present State of the Art

Rose is the name designated to multi-year close seed and nice smelling woody plant species of Rosa Damascena of Rosaceae family. Homeland of most rose types is Asia. Few number of them grow in Europe, North America and North-west Africa. Roses are mostly grown for their beauties and smells and have cultural essence in several societies. Vitamins, antioxidants and nice smells of them are other factors making this delicate flower popular.

Because of being natural and having strong antiseptic features, rose is used in several areas today and particularly is commonly used in medicine, cosmetics and gastronomy fields.

In the literature following applications are seen related to the subject. The applications related to rose oil from rose, rose water, rose essence extraction processes and use areas of them.

TR application numbered 2020/07882 discloses a method for rose water and rose oil extraction from rose and use of them in hand sanitizer composition.

Another invention is a Chinese application numbered CN112126524 (A). The invention relates to rose essence distillation method. A cutting and grinding device are used for rose essence distillation method.

Natural rose products, particularly rose water is difficult to find in the related technic. It is because it is difficult and expensive to store rose water produced in May-June months in sterilised conditions for long time period. In general, rose essences are used in rose water production and they are harmful for health and have long and costly processes. Use of said rose essences in rose water use fields is considered harmful for health because said essences comprises chemical agents. Although rose water or rose essence are produced through natural ways, a novelty in the related technic is needed as they are easily affected by temperature and other environmental conditions.

As a result, due to above-described disadvantages and inadequacy of existing solutions it has been necessary to make development in the related technic.

Brief Description of the Invention

The present invention relates to rose water in powder form and its production method meeting the needs mentioned above, eliminating all disadvantages, and providing some additional advantages, and a manufacturing method for the powder.

Primary aim of the invention is to provide an effective method to obtain rose water converted into powder form correctly in powder form having high stability.

Another aim of the invention is to create process steps applied during method used to obtain rose water in powder form are convenient and provide efficient results without deforming rose water content.

A further aim of the invention is to provide easy use of rose water in powder form obtained by said method in cosmetics and food sector and use it to give natural smell, aroma not containing chemical agents.

The invention aims to provide conversion of rose water into powder form by means of an effective and simple method in order to increase stabilization of rose water and facilitate easy use thereof in several sectors.

In order to achieve above-described purposes, the invention is a method to obtain rose water in powder form and comprises steps listed below. a) adding maltodextrin and/or inulin and/or gum Arabic and/or xanthan gum into rose water concentrate or rose water and then adding water into this mixture to form emulsion, b) drying obtained emulsion in spray dryer and converting into powder.

The structural and characteristics features of the invention and all advantages will be understood better in detailed descriptions given below and therefore, the assessment should be made taking into account the detailed explanations. Detailed Description of the Invention

In this detailed description, the rose water in powder form and its production method have been described in a manner not forming any restrictive effect and only for purpose of better understanding of the matter.

Rose water in powder form disclosed under this present invention is produced by means of applying required pre-treatment to rose water at convenient conditions and drying it. Upon vaporization of water in the dried product as a result of drying the product remains in powder. Antioxidants, active agents in rose water in natural powder form are protected similar to its fresh natural form and thus can be stored in stable for long periods.

According to main application of the invention, it is a method to obtain rose water in powder form and characterized by process steps of a) adding maltodextrin and/or inulin and/or gum Arabic and/or xanthan gum into rose water concentrate or into rose water and then adding water into this mixture to form emulsion, b) drying obtained emulsion in spray dryer and converting into powder.

According to an application of the invention, during process step a maltodextrin and/or inulin and/or gum Arabic and/or xanthan gum is added into rose water concentrate or rose water in order to form a structure on outer surface of rose water concentrate or rose water outer surface. Water is added to this mixture, and emulsion is obtained. All process steps are performed at room temperature of 20 °C.

According to an application of the invention, in process step a, said rose water concentrate is obtained by passing rose water through ion exchange resin. Rose water concentrate provides shorter process step when compared to use of rose water.

According to an application of the invention, inulin, gum Arabic and maltodextrin is added into rose water concentrate or rose water in process step a.

According to an application of the invention, maltodextrin and gum Arabic are added into rose water concentrate or rose water in process step a.

According to an application of the invention, inulin and gum Arabic are added into rose water concentrate or rose water in process step a. According to an application of the invention, xanthan gum, gum Arabic and maltodextrin are added into rose water concentrate or rose water in process step a.

According to an application of the invention, mechanical stirrer is used as mixer in process step a.

According to an application of the invention, homogenizer or magnetic stirrer is used as mixer in process step a.

According to an application of the invention, emulsifier are agents sused in process step a when forming emulsion. Emulsifier are agents mixed in order to provide mixture of two or more phases not mixing with each other.

Maltodextrin is an agent in polysaccharide class. It is used safely in several sectors such as cosmetics, medicine, food. It has high melting point. Maltodextrin is used to form a shell on outer surface of rose water concentrate in the invention.

Inulin is a natural group of polysaccharide produced by several plant types. It is used safely in several sectors such as cosmetics, medicine, food. It is used to form a shell on outer surface of rose water concentrate in the invention.

Gum Arabic is also known as acacin, Senegal gum, Indian gum. Gum arabic is a complex mixture of glycoprotein comprising commonly arabinose and galactose, and polysaccharide. It is an agent soluble in water and can safely be used in many sectors. Gum arabic is used to form a film around rose water concentrate in the present invention.

Xanthan gum is a polysaccharide obtained from fermentation of Xantnomonas campestris bacteria from glucose or sucrose. It is preferred in several sectors for its solid stabilization and durable against environmental conditions. It is used to form a film around rose water concentrate in the present invention.

According to an application of the invention, emulsion is kept in spray dryer for 40 minutes at process step b. After average 40 minutes, about 25 g powder is obtained. Inlet temperature of emulsion at spray dryer is between 110°C and 180°C. Moisture rate of product increases at low inlet temperature and rose water volatile oils may escape from air outlet at high temperature. For that reason, inlet temperature is important.

According to an application of the invention, inlet temperature of emulsion at spray dryer is preferably 150°C in process step b. According to an application of the invention, outlet temperature of emulsion at spray dryer is preferably 90 - 98°C in process step b. Outlet temperature may vary subject to several parameters such as inlet air relative humidity, inlet air temperature, spray gas flow, feeding rate, emulsion solid concentrate and use of organic solvent in emulsion. Spray dryer parameters are as follows; aspirator rate 100 %, pump rate 10-30 %, inlet air feeding 30-40 mmHg.

According to an application of the invention content of rose water in powder form obtained by use of above described method is as follows;

- Rose water/rose water concentrate Maltodextrin and/or inulin,

- Gum arabic and/or xanthan gum

- Optionally emulsifier

According to an application of the invention, rose water concentrate quantity is between 1 % and 20 % by weight in comparison to total composition. This amount is preferably 8 % in comparison to total composition by weight.

According to an application of the invention, maltodextrin quantity is between 25 % and 65 % by weight in comparison to total composition. This amount is preferably 30 % in comparison to total composition by weight.

According to an application of the invention, inulin quantity is between 10 % and 50 % by weight in comparison to total composition. This amount is preferably 16 % in comparison to total composition by weight.

According to an application of the invention, gum arabic quantity is between 25 % and 50 % by weight in comparison to total composition. This amount is preferably 46 % in comparison to total composition by weight.

According to an application of the invention, xanthan gum quantity is between 0.1 % and 5 % by weight in comparison to total composition. This amount is preferably 0.2 % in comparison to total composition by weight.

According to an application of the invention, quantity of emulsifier that can be used optionally is between 0.1 % and 3 % by weight in comparison to total composition. According to an application of the invention, rose water in powder form can stay stabile for long time period on shelf and provides easy to use by dissolving in water when desired, and thus area of use can also be considerably wide.

According to an application of the invention, rose water in powder form is mixed with water and rose water can be obtained easily.

According to an application of the invention, rose water in powder form can be used as raw material or compound in food, cosmetic sectors. In cosmetic sector, for instance, it is added into cream or shampoo products or in products of food sector directly thus antioxidants available in rose and nice smell can be added to the products as a natural component. It can also be used as food additive or aroma.

Examples

Example 1 ; rose water composition converted into powder form accurately Example 2; rose water composition converted into powder form accurately Example 3; rose water composition converted into powder form accurately

Example 4; rose water composition converted into powder form accurately