Preliminary selection
Preliminary trials were conducted to standardize the processing technology for incorporating safflower petals in basundi, based on a review of literature and initial experimental results. The final formulation of basundi with safflower petals was optimised following the method described by
De (1980). Four concentration levels of safflower petals 0.2%, 0.4%, 0.6% and 0.8% were selected based on sensory evaluation outcomes. Incorporating safflower petals at the stage when milk was reduced to 50% of its original volume resulted in better retention of color and aroma compared to addition during the earlier boiling stage.
Sensory evaluation of safflower basundi
The sensory quality of basundi blended with safflower petals was evaluated using a 9-point hedonic scale for flavour, colour and appearance, body and texture, mouthfeel and overall acceptability, as shown in Table 1.
Flavour
The control sample T
1 obtained the highest flavour score, mainly due to its characteristic saffron aroma. Treatments T
2 and T
3 also received high scores and were well accepted for their mild floral notes, whereas T
4 and T
5 showed a gradual reduction in flavour scores, associated with a slight bitterness at higher safflower levels.
Colour and appearance
Treatment T
3 recorded the highest score for colour and appearance, exhibiting an attractive saffron-like hue. Treatments T
1 and T
2 were also visually appealing, while T
4 and T
5 showed darker shades that deviated from the typical appearance of basundi, resulting in slightly lower scores.
Body and texture
Body and texture scores remained high and comparable for T
1‚ T
2 and T
3, indicating that safflower incorporation up to 0.4% maintained the desired smooth and creamy texture of basundi. A slight decline in scores for T
4 and T
5 was observed, which can be attributed to the increased fibre content from the petals, leading to a marginally coarse texture.
Mouthfeel
Mouthfeel scores were highest in T
1, followed closely by T
2 and T
3, suggesting that safflower petal levels up to 0.4% did not adversely affect the characteristic creamy mouth-coating sensation of basundi. Lower scores in T
4 and T
5 indicated a slightly coarse or dry sensation at higher petal concentrations.
Overall acceptability
Overall acceptability was highest for T
3 (0.4% safflower petals), followed by T
2 and T
3, showing that moderate safflower incorporation provided the best balance of flavour, colour, texture and mouthfeel. Higher inclusion levels (T
4 and T
5) reduced overall acceptability because of excessive colour intensity, increased fibre content and mild bitterness.
Physico-chemical evaluation of basundi blended with safflower petals
The physic-chemical properties such as pH, titratable acidity, fat, protein, ash, moisture, total solids and carbohydrates, as shown in Table 2.
pH
The pH of basundi decreased progressively from T
1 to T
5, indicating a gradual increase in acidity with higher levels of safflower petals. This trend suggests that organic acids and phenolic constituents from the petals influenced the acid-base balance of the product.
Titratable acidity
Titratable acidity increased from T
1 to T
5, showing an inverse relationship with pH. The rise in acidity can be attributed to the natural acidic components of safflower petals, which contributed to a slightly higher lactic acid equivalent in the basundi matrix.
Moisture content
Moisture content of basundi decreased as the level of safflower petal incorporation increased. This reduction in moisture is associated with the presence of fibrous plant material, which tends to bind water and increase the proportion of total solids.
Total solids
Total solids content increased across treatments from T
1 to T
5, corresponding to the decline in moisture. The added safflower petals supplied additional insoluble and soluble solids, including fibre and pigment, thereby enhancing the overall solids content and contributing to a richer body.
Fat content
Fat content showed a slight decline from T
1 to T
5. This decrease is likely due to a dilution effect, where the proportion of fat is reduced relative to the increasing number of non-fat solids introduced by the petals.
Deshpande et al. (2024) shows similar results while addition of modified psyllium husk in basundi.
Protein content
Protein content increased marginally with higher levels of safflower petals. This trend reflects the contribution of safflower proteins to the total protein fraction of basundi, adding to the milk proteins already present.
Ash content
Ash content, representing total mineral content, increased steadily from T
1 to T
5. The rise in ash values indicates enhanced mineral contribution from safflower petals, which are naturally rich in various micronutrients.
Carbohydrate content
Carbohydrate content of basundi increased from T
1 to T
5 with incremental addition of safflower petals. This increase can be linked to naturally occurring carbohydrates and dietary fibre in the petals, which add to the lactose and sucrose already present in the formulation.
Colour index
L* value (Lightness)
In the Table 3, the L* value decreased from T
1 to T
5, indicating that basundi became progressively darker with increasing safflower levels. Higher pigment concentration and heat-induced colour development contributed to this reduction in lightness.
a* value (Red-green axis)
It is revealed from the Table 3, the a* value shifted towards the red axis as safflower incorporation increased. This change reflects the growing influence of red-orange pigments from the petals, resulting in warmer visual tones in the product.
b* value (Yellow-blue axis)
It can be observed from the Table 3, the b* value increased consistently from T
1 to T
5, confirming an enhancement in yellowness with higher safflower levels. This strong yellow-orange hue is due to the presence of water-soluble yellow pigments in safflower, which effectively coloured the milk matrix.
The sensory evaluation established that 0.4% safflower petal incorporation (T
3) yielded the highest overall acceptability score, surpassing the saffron control (T
1), particularly in colour and appearance, while maintaining equivalent flavour, body, texture and mouthfeel characteristics. This optimal performance mirrors
Jadhav (2019), who documented peak sensory acceptance at 1.0% safflower extract in shrikhand, where moderate levels balanced pigment intensity with minimal bitterness development. Higher concentrations (T
4, T
5) exhibited declining scores due to phenolic bitterness from elevated flavonoid content, consistent with
Demgunde et al., (2019) observations of flavour reduction in pumpkin pulp-enriched basundi beyond optimal levels (
Jadhav, 2019;
Demgunde et al., 2019).
Physico-chemical transformations align with safflower petal composition. The pH decline from 6.48 (T
1) to 5.80 (T
5) and corresponding titratable acidity increase (0.39% to 0.54%) result from thermal release of organic acids (citric, malic) and phenolics during simmering, as similarly reported by
Borate et al., (2022) for anjeer-blended basundi where pH dropped from 6.40 to 6.04
(Borate et al., 2022). Moisture reduction (57.67% to 47.47%) and total solids elevation (42.33% to 52.53%) stem from petal fibre’s water-binding capacity and insoluble solid contribution, enhancing body as observed by
Bawale (2018) with custard apple pulp incorporation (
Bawale, 2018). Fat content dilution (12.43% to 11.84%) reflects non-fat solid addition, while protein enrichment (8.10% to 8.32%) derives from safflower’s 15-20% protein content, predominantly albumins and globulins
(Wakde et al., 2019). Ash increase (1.41% to 1.72%) indicates mineral supplementation (K, Mg, Ca) and carbohydrate rise (21.07% to 23.57%) originates from petal hemicellulose and natural sugars (
Yadav, 2015).
Instrumental colour analysis confirms safflower’s saffron-mimetic potential. Decreasing L* values reflect Maillard-induced darkening from pigment-protein interactions, while escalating b* values (26.61 to 42.40) validate carthamin and carthamidin deposition, producing characteristic yellow-orange hues as demonstrated by
Machewad et al., (2012) in safflower-pigmented ice cream. The a* shift toward red coordinates with flavonoid quinoid formation under alkaline milk conditions, paralleling
Mukhekar et al., (2016) findings in mango pulp basundi
(Machewad et al., 2012; Mukhekar et al., 2016).