(Zolghadri,  et  al.,  2019).  Diphenyl  picrylhydrazin 
(DPPH) compound is a free radical that is stable in 
aqueous or methanol solution and has a purple color 
(indicated  by  the  absorption  band  in  the  methanol 
solvent at a wavelength of 515-520 nm). The DPPH 
has properties that are sensitive to light, oxygen, and 
pH, but are stable in the form of radicals so that it is 
possible to measure an accurate antioxidant activity. 
The  antioxidant  compounds  will  release  hydrogen 
atoms  to  form  radical  antioxidant  compounds.  The 
DPPH  which  is  a  free  radical  that  reacted  with 
antioxidant  compounds  to  form  non-radical  DPPH 
(Widowati,  et.al.,  2016).  Mini  rose  showed  the 
greater  antioxidant  activity  in  the  ferric  reducing 
antioxidant  power  (FRAP)  and  DPPH  tests  before 
digestion  in  vitro  and  together  with  cosmos  as  a 
source of phenolics with good antioxidant activity (de 
Morais, et.al., 2020). Dry rose tea can be used as a 
functional food to be a source of natural antioxidants 
(Kart & Çağındı, 2017). 
Previous studies have shown that phytochemical 
compounds  contained  in  Rosa  Damascena  flower 
petals  consist  of  alkaloids,  flavonoids,  tannins, 
carbohydrates,  and  amino  acids  (Tatke,  Satyapal, 
Mahajan & Naharwar, 2015). It has also been found 
that  rose  petal  extract  contains  high  anthocyanins, 
flavonoids,  polyphenols  (Lee,  et.al.,  2018).  Unlike 
the  results of  the  phytochemical  tests  in  this  study, 
where the rose petals  also  contain triterpenoids and 
terpenoids. 
Measuring  the  effectiveness  of  a  compound  in 
biological  or  biochemical  functions  capable  of 
inhibiting  the  oxidation  process  by  50%  (IC
50
)  was 
classified in several groups including <50 µg µg per 
milliliter  (very  strong);  50-100  µg  µg  per  milliliter 
(strong); 101-150 µg µg per milliliter (moderate); > 
150 µg µg per milliliter (weak) (Budaraga, Marlida & 
Bulanin, 2016). The IC
50
 value of extracted by DPPH 
method on black soybean and daidzein was 116.52 µg 
/ mL and 109.34 µg / mL, repectively, which means 
it  has  moderate  antioxidant  strength  (Kuswanto, 
2018). Ethanol extract of cocoa beans and kojat acid 
can  be  used  as  inhibitors  of  enzymaticrosinase 
(Kurniasari,  Djajadisastra  &  Anwar,  2018).  Oil 
obtained from Nigela Sativa seeds (known as black 
cumin) is also often used as an anti-oxidant and anti-
inflammatory  (Bordoni,  et.al.,  2019).  Manga  waste 
(skin, seed  coat, seeds) from the  Colombian  manga 
cultivar is a source of phenolic compounds that can 
be  used  as  antioxidants  and  free  radical  cleaners 
(Castro-Vargas et al., 2019). 
The antioxidant activity test of  Rosa damascena 
rose  petal  extract  was  using  standard  ascorbic  acid 
(iron  reducing  power  test)  and  showed  the  highest 
antioxidant in the cream formula (Safia, et.al., 2019). 
The results show that rose extract has good potential 
for cosmetic development. Rose oil has the strongest 
antioxidant effect and a mixture of Rose oil, bergamot 
and patchouli (RBP) with a volume ratio of 7: 2: 1 
produces  the  strongest  antioxidant  effect  on  the 
DPPH  and  ATBS  Test  [2,2-azinobis  (3-
ethylbenzothiazoline-6  sulphonic  acid)] 
(Wongsukkasem, e.al., 2018). In that study also found 
that  rose  oil  and  bergamot  have  an  antityrosinase 
activity  around  28  ±  14.2%  and  21  ±  10.7%. 
However,  the  study  did  not  specifically  explain 
whether  there  were  differences  in  antioxidant 
concentrations between the base and rose petals. 
2  METHOD 
This  research  is  an  experimental  laboratory  study 
with  data  collection  (random  sampling)  using 
samples of rose extract and receptacle. The study was 
conducted  from  July-September  2019  at  the 
Biomolecular  Laboratory  and  Biomedical  Research 
Center (Aretha Medika Utama). The sample used was 
a rose obtained from the Source Seed Management 
Unit,  Research  Institute  for  Miscellaneous  Plant 
Flowers in Malang and has gone through a process of 
determination. Rose was washed and dried in the sun 
to dry milled and extracted by maceration technique 
using  70%  ethanol  solvent  for  3  days  at  room 
temperature.  Next,  the  marinade  was  filtered  to 
separate  the  filtrate  and  the  residue.  The  obtained 
filtrate was evaporated with 
amotor unit that rotates 
the evaporation flask in 50
 
celcius degrees, so that a 
solid extract was received. 
Rose  petals  has  1400  g  net  weight,  simplicia 
powder of rose petals was 250 grams and the basic 
wet weight of rose flower was 700 g processed into 
simplicia  powder,  base  of  rose  flowers  about  90 
grams each dissolved in 70% ethanol for 3 days by 
maceration method, so the extract of rose petal about 
88.56 and 2.72 grams of rose base extract. 
The  tools  and  materials  used  in  the 
phytochemical, DPPH trapping, and tyrosinase tests, 
respectively,  are  given  in  Table  1.  Phytochemical 
tests are used to identify phenol compounds, steroids 
/  triterpenoids,  saponins,  tannins,  terpenoids, 
flavonoids, and alkaloids found in the lids, and bases 
roses. 
Identification  of  phenol  was  carried  out  by 
dissolving extracts of petals and rose base 10 mg in 
ddH2O about 5 ml then adding 500% FeCl
3
 solution 
about  500  µl.  It  is  known  that  the  sample  solution 
contains  phenol  group  compounds  if  one  of  the